{
  "schema": "semiagora.knowledge-sim-result.v1",
  "experimentId": "KNOWLEDGE_SIM_SPRINT_2026-08-14",
  "generatedAtKst": "2026-08-14",
  "sections": [
    "Explore",
    "Run Card",
    "Export",
    "Methods",
    "Limits",
    "Evidence"
  ],
  "boundary": [
    "precomputed educational data only",
    "no live solver or server-side execution",
    "no proprietary PDK, foundry model deck, measured company data, or process recipe",
    "no equipment operation instructions or production qualification claims",
    "external literature and repositories are cited as source spines, not copied"
  ],
  "simulationId": "SA-MEM-NAND3D-001",
  "slug": "3d-nand-string-vt-ecc-retention",
  "title": "3D NAND string Vt distribution, read-retry, and ECC margin replay",
  "track": "Memory School / NAND and Flash",
  "lessonRoute": "/learn/dram-hbm-emerging-memory",
  "simulationRoute": "/simulations/3d-nand-string-vt-ecc-retention",
  "promotionPriority": "P0",
  "modelType": "toy threshold-distribution and ECC-margin replay",
  "sourceLinks": [
    "https://www.mdpi.com/2073-431X/6/2/16",
    "https://www.pdl.cmu.edu/PDL-FTP/NVM/flash-memory-voltage-characterization_date13.pdf",
    "https://github.com/NetherlandsForensicInstitute/nandtool"
  ],
  "knobs": [
    {
      "name": "layer_group",
      "unit": "category",
      "values": [
        "bottom",
        "middle",
        "top"
      ]
    },
    {
      "name": "pe_cycles",
      "unit": "cycles",
      "values": [
        0,
        1000,
        3000,
        8000
      ]
    },
    {
      "name": "retention_days",
      "unit": "days",
      "values": [
        1,
        30,
        365
      ]
    },
    {
      "name": "read_retry_steps",
      "unit": "steps",
      "values": [
        0,
        2,
        6
      ]
    }
  ],
  "metrics": [
    "vt_sigma_v_proxy",
    "vt_shift_v_proxy",
    "raw_ber_proxy",
    "ecc_margin_db_proxy"
  ],
  "limitations": [
    "No vendor NAND characterization data is used.",
    "No controller firmware, recovery workflow, or forensic instruction is provided.",
    "ECC margin is a teaching proxy, not a storage-product reliability result."
  ],
  "counts": {
    "rows": 108,
    "knobs": 4,
    "metrics": 4
  },
  "representativeFindings": [
    "3D NAND deserves its own public card because it connects process variation, retention, read-retry, and ECC in one job-relevant view.",
    "Layer group is the cleanest way to explain 3D stack nonuniformity without vendor data.",
    "This can sit beside the existing NAND threshold/ECC card as the deeper string-level replay."
  ],
  "rows": [
    {
      "simulationId": "SA-MEM-NAND3D-001",
      "slug": "3d-nand-string-vt-ecc-retention",
      "layer_group": "bottom",
      "pe_cycles": 0,
      "retention_days": 1,
      "read_retry_steps": 0,
      "vt_sigma_v_proxy": 0.2277,
      "vt_shift_v_proxy": 0.0007,
      "state_overlap_proxy": 0.105,
      "raw_ber_proxy": 0.008461,
      "ecc_margin_db_proxy": 4.974,
      "recovery_from_retry_pct_proxy": 0,
      "band": "retry-needed"
    },
    {
      "simulationId": "SA-MEM-NAND3D-001",
      "slug": "3d-nand-string-vt-ecc-retention",
      "layer_group": "bottom",
      "pe_cycles": 0,
      "retention_days": 1,
      "read_retry_steps": 2,
      "vt_sigma_v_proxy": 0.2277,
      "vt_shift_v_proxy": 0.0007,
      "state_overlap_proxy": 0.035,
      "raw_ber_proxy": 0.004261,
      "ecc_margin_db_proxy": 10.932,
      "recovery_from_retry_pct_proxy": 17,
      "band": "comfortable-ecc"
    },
    {
      "simulationId": "SA-MEM-NAND3D-001",
      "slug": "3d-nand-string-vt-ecc-retention",
      "layer_group": "bottom",
      "pe_cycles": 0,
      "retention_days": 1,
      "read_retry_steps": 6,
      "vt_sigma_v_proxy": 0.2277,
      "vt_shift_v_proxy": 0.0007,
      "state_overlap_proxy": 0,
      "raw_ber_proxy": 0.002163,
      "ecc_margin_db_proxy": 16.82,
      "recovery_from_retry_pct_proxy": 51,
      "band": "comfortable-ecc"
    },
    {
      "simulationId": "SA-MEM-NAND3D-001",
      "slug": "3d-nand-string-vt-ecc-retention",
      "layer_group": "bottom",
      "pe_cycles": 0,
      "retention_days": 30,
      "read_retry_steps": 0,
      "vt_sigma_v_proxy": 0.2781,
      "vt_shift_v_proxy": -0.0359,
      "state_overlap_proxy": 0.1503,
      "raw_ber_proxy": 0.013012,
      "ecc_margin_db_proxy": 1.235,
      "recovery_from_retry_pct_proxy": 0,
      "band": "ecc-risk"
    },
    {
      "simulationId": "SA-MEM-NAND3D-001",
      "slug": "3d-nand-string-vt-ecc-retention",
      "layer_group": "bottom",
      "pe_cycles": 0,
      "retention_days": 30,
      "read_retry_steps": 2,
      "vt_sigma_v_proxy": 0.2781,
      "vt_shift_v_proxy": -0.0359,
      "state_overlap_proxy": 0.0803,
      "raw_ber_proxy": 0.008812,
      "ecc_margin_db_proxy": 4.621,
      "recovery_from_retry_pct_proxy": 17,
      "band": "retry-needed"
    },
    {
      "simulationId": "SA-MEM-NAND3D-001",
      "slug": "3d-nand-string-vt-ecc-retention",
      "layer_group": "bottom",
      "pe_cycles": 0,
      "retention_days": 30,
      "read_retry_steps": 6,
      "vt_sigma_v_proxy": 0.2781,
      "vt_shift_v_proxy": -0.0359,
      "state_overlap_proxy": 0,
      "raw_ber_proxy": 0.003994,
      "ecc_margin_db_proxy": 11.493,
      "recovery_from_retry_pct_proxy": 51,
      "band": "comfortable-ecc"
    },
    {
      "simulationId": "SA-MEM-NAND3D-001",
      "slug": "3d-nand-string-vt-ecc-retention",
      "layer_group": "bottom",
      "pe_cycles": 0,
      "retention_days": 365,
      "read_retry_steps": 0,
      "vt_sigma_v_proxy": 0.3235,
      "vt_shift_v_proxy": -0.0689,
      "state_overlap_proxy": 0.1911,
      "raw_ber_proxy": 0.01711,
      "ecc_margin_db_proxy": -1.143,
      "recovery_from_retry_pct_proxy": 0,
      "band": "ecc-risk"
    },
    {
      "simulationId": "SA-MEM-NAND3D-001",
      "slug": "3d-nand-string-vt-ecc-retention",
      "layer_group": "bottom",
      "pe_cycles": 0,
      "retention_days": 365,
      "read_retry_steps": 2,
      "vt_sigma_v_proxy": 0.3235,
      "vt_shift_v_proxy": -0.0689,
      "state_overlap_proxy": 0.1211,
      "raw_ber_proxy": 0.01291,
      "ecc_margin_db_proxy": 1.303,
      "recovery_from_retry_pct_proxy": 17,
      "band": "ecc-risk"
    },
    {
      "simulationId": "SA-MEM-NAND3D-001",
      "slug": "3d-nand-string-vt-ecc-retention",
      "layer_group": "bottom",
      "pe_cycles": 0,
      "retention_days": 365,
      "read_retry_steps": 6,
      "vt_sigma_v_proxy": 0.3235,
      "vt_shift_v_proxy": -0.0689,
      "state_overlap_proxy": 0,
      "raw_ber_proxy": 0.005644,
      "ecc_margin_db_proxy": 8.49,
      "recovery_from_retry_pct_proxy": 51,
      "band": "comfortable-ecc"
    },
    {
      "simulationId": "SA-MEM-NAND3D-001",
      "slug": "3d-nand-string-vt-ecc-retention",
      "layer_group": "bottom",
      "pe_cycles": 1000,
      "retention_days": 1,
      "read_retry_steps": 0,
      "vt_sigma_v_proxy": 0.338,
      "vt_shift_v_proxy": 0.0208,
      "state_overlap_proxy": 0.2042,
      "raw_ber_proxy": 0.01742,
      "ecc_margin_db_proxy": -1.299,
      "recovery_from_retry_pct_proxy": 0,
      "band": "ecc-risk"
    },
    {
      "simulationId": "SA-MEM-NAND3D-001",
      "slug": "3d-nand-string-vt-ecc-retention",
      "layer_group": "bottom",
      "pe_cycles": 1000,
      "retention_days": 1,
      "read_retry_steps": 2,
      "vt_sigma_v_proxy": 0.338,
      "vt_shift_v_proxy": 0.0208,
      "state_overlap_proxy": 0.1342,
      "raw_ber_proxy": 0.01322,
      "ecc_margin_db_proxy": 1.097,
      "recovery_from_retry_pct_proxy": 17,
      "band": "ecc-risk"
    },
    {
      "simulationId": "SA-MEM-NAND3D-001",
      "slug": "3d-nand-string-vt-ecc-retention",
      "layer_group": "bottom",
      "pe_cycles": 1000,
      "retention_days": 1,
      "read_retry_steps": 6,
      "vt_sigma_v_proxy": 0.338,
      "vt_shift_v_proxy": 0.0208,
      "state_overlap_proxy": 0,
      "raw_ber_proxy": 0.00517,
      "ecc_margin_db_proxy": 9.253,
      "recovery_from_retry_pct_proxy": 51,
      "band": "comfortable-ecc"
    },
    {
      "simulationId": "SA-MEM-NAND3D-001",
      "slug": "3d-nand-string-vt-ecc-retention",
      "layer_group": "bottom",
      "pe_cycles": 1000,
      "retention_days": 30,
      "read_retry_steps": 0,
      "vt_sigma_v_proxy": 0.3883,
      "vt_shift_v_proxy": -0.0158,
      "state_overlap_proxy": 0.2495,
      "raw_ber_proxy": 0.021971,
      "ecc_margin_db_proxy": -3.315,
      "recovery_from_retry_pct_proxy": 0,
      "band": "ecc-risk"
    },
    {
      "simulationId": "SA-MEM-NAND3D-001",
      "slug": "3d-nand-string-vt-ecc-retention",
      "layer_group": "bottom",
      "pe_cycles": 1000,
      "retention_days": 30,
      "read_retry_steps": 2,
      "vt_sigma_v_proxy": 0.3883,
      "vt_shift_v_proxy": -0.0158,
      "state_overlap_proxy": 0.1795,
      "raw_ber_proxy": 0.017771,
      "ecc_margin_db_proxy": -1.472,
      "recovery_from_retry_pct_proxy": 17,
      "band": "ecc-risk"
    },
    {
      "simulationId": "SA-MEM-NAND3D-001",
      "slug": "3d-nand-string-vt-ecc-retention",
      "layer_group": "bottom",
      "pe_cycles": 1000,
      "retention_days": 30,
      "read_retry_steps": 6,
      "vt_sigma_v_proxy": 0.3883,
      "vt_shift_v_proxy": -0.0158,
      "state_overlap_proxy": 0.0395,
      "raw_ber_proxy": 0.009371,
      "ecc_margin_db_proxy": 4.086,
      "recovery_from_retry_pct_proxy": 51,
      "band": "retry-needed"
    },
    {
      "simulationId": "SA-MEM-NAND3D-001",
      "slug": "3d-nand-string-vt-ecc-retention",
      "layer_group": "bottom",
      "pe_cycles": 1000,
      "retention_days": 365,
      "read_retry_steps": 0,
      "vt_sigma_v_proxy": 0.4337,
      "vt_shift_v_proxy": -0.0488,
      "state_overlap_proxy": 0.2903,
      "raw_ber_proxy": 0.02607,
      "ecc_margin_db_proxy": -4.801,
      "recovery_from_retry_pct_proxy": 0,
      "band": "ecc-risk"
    },
    {
      "simulationId": "SA-MEM-NAND3D-001",
      "slug": "3d-nand-string-vt-ecc-retention",
      "layer_group": "bottom",
      "pe_cycles": 1000,
      "retention_days": 365,
      "read_retry_steps": 2,
      "vt_sigma_v_proxy": 0.4337,
      "vt_shift_v_proxy": -0.0488,
      "state_overlap_proxy": 0.2203,
      "raw_ber_proxy": 0.02187,
      "ecc_margin_db_proxy": -3.275,
      "recovery_from_retry_pct_proxy": 17,
      "band": "ecc-risk"
    },
    {
      "simulationId": "SA-MEM-NAND3D-001",
      "slug": "3d-nand-string-vt-ecc-retention",
      "layer_group": "bottom",
      "pe_cycles": 1000,
      "retention_days": 365,
      "read_retry_steps": 6,
      "vt_sigma_v_proxy": 0.4337,
      "vt_shift_v_proxy": -0.0488,
      "state_overlap_proxy": 0.0803,
      "raw_ber_proxy": 0.01347,
      "ecc_margin_db_proxy": 0.935,
      "recovery_from_retry_pct_proxy": 51,
      "band": "ecc-risk"
    },
    {
      "simulationId": "SA-MEM-NAND3D-001",
      "slug": "3d-nand-string-vt-ecc-retention",
      "layer_group": "bottom",
      "pe_cycles": 3000,
      "retention_days": 1,
      "read_retry_steps": 0,
      "vt_sigma_v_proxy": 0.3641,
      "vt_shift_v_proxy": 0.0255,
      "state_overlap_proxy": 0.2277,
      "raw_ber_proxy": 0.01954,
      "ecc_margin_db_proxy": -2.297,
      "recovery_from_retry_pct_proxy": 0,
      "band": "ecc-risk"
    },
    {
      "simulationId": "SA-MEM-NAND3D-001",
      "slug": "3d-nand-string-vt-ecc-retention",
      "layer_group": "bottom",
      "pe_cycles": 3000,
      "retention_days": 1,
      "read_retry_steps": 2,
      "vt_sigma_v_proxy": 0.3641,
      "vt_shift_v_proxy": 0.0255,
      "state_overlap_proxy": 0.1577,
      "raw_ber_proxy": 0.01534,
      "ecc_margin_db_proxy": -0.195,
      "recovery_from_retry_pct_proxy": 17,
      "band": "ecc-risk"
    },
    {
      "simulationId": "SA-MEM-NAND3D-001",
      "slug": "3d-nand-string-vt-ecc-retention",
      "layer_group": "bottom",
      "pe_cycles": 3000,
      "retention_days": 1,
      "read_retry_steps": 6,
      "vt_sigma_v_proxy": 0.3641,
      "vt_shift_v_proxy": 0.0255,
      "state_overlap_proxy": 0.0177,
      "raw_ber_proxy": 0.00694,
      "ecc_margin_db_proxy": 6.695,
      "recovery_from_retry_pct_proxy": 51,
      "band": "retry-needed"
    },
    {
      "simulationId": "SA-MEM-NAND3D-001",
      "slug": "3d-nand-string-vt-ecc-retention",
      "layer_group": "bottom",
      "pe_cycles": 3000,
      "retention_days": 30,
      "read_retry_steps": 0,
      "vt_sigma_v_proxy": 0.4144,
      "vt_shift_v_proxy": -0.0111,
      "state_overlap_proxy": 0.273,
      "raw_ber_proxy": 0.024091,
      "ecc_margin_db_proxy": -4.115,
      "recovery_from_retry_pct_proxy": 0,
      "band": "ecc-risk"
    },
    {
      "simulationId": "SA-MEM-NAND3D-001",
      "slug": "3d-nand-string-vt-ecc-retention",
      "layer_group": "bottom",
      "pe_cycles": 3000,
      "retention_days": 30,
      "read_retry_steps": 2,
      "vt_sigma_v_proxy": 0.4144,
      "vt_shift_v_proxy": -0.0111,
      "state_overlap_proxy": 0.203,
      "raw_ber_proxy": 0.019891,
      "ecc_margin_db_proxy": -2.451,
      "recovery_from_retry_pct_proxy": 17,
      "band": "ecc-risk"
    },
    {
      "simulationId": "SA-MEM-NAND3D-001",
      "slug": "3d-nand-string-vt-ecc-retention",
      "layer_group": "bottom",
      "pe_cycles": 3000,
      "retention_days": 30,
      "read_retry_steps": 6,
      "vt_sigma_v_proxy": 0.4144,
      "vt_shift_v_proxy": -0.0111,
      "state_overlap_proxy": 0.063,
      "raw_ber_proxy": 0.011491,
      "ecc_margin_db_proxy": 2.315,
      "recovery_from_retry_pct_proxy": 51,
      "band": "retry-needed"
    },
    {
      "simulationId": "SA-MEM-NAND3D-001",
      "slug": "3d-nand-string-vt-ecc-retention",
      "layer_group": "bottom",
      "pe_cycles": 3000,
      "retention_days": 365,
      "read_retry_steps": 0,
      "vt_sigma_v_proxy": 0.4598,
      "vt_shift_v_proxy": -0.0441,
      "state_overlap_proxy": 0.3138,
      "raw_ber_proxy": 0.02819,
      "ecc_margin_db_proxy": -5.48,
      "recovery_from_retry_pct_proxy": 0,
      "band": "ecc-risk"
    },
    {
      "simulationId": "SA-MEM-NAND3D-001",
      "slug": "3d-nand-string-vt-ecc-retention",
      "layer_group": "bottom",
      "pe_cycles": 3000,
      "retention_days": 365,
      "read_retry_steps": 2,
      "vt_sigma_v_proxy": 0.4598,
      "vt_shift_v_proxy": -0.0441,
      "state_overlap_proxy": 0.2438,
      "raw_ber_proxy": 0.02399,
      "ecc_margin_db_proxy": -4.079,
      "recovery_from_retry_pct_proxy": 17,
      "band": "ecc-risk"
    },
    {
      "simulationId": "SA-MEM-NAND3D-001",
      "slug": "3d-nand-string-vt-ecc-retention",
      "layer_group": "bottom",
      "pe_cycles": 3000,
      "retention_days": 365,
      "read_retry_steps": 6,
      "vt_sigma_v_proxy": 0.4598,
      "vt_shift_v_proxy": -0.0441,
      "state_overlap_proxy": 0.1038,
      "raw_ber_proxy": 0.01559,
      "ecc_margin_db_proxy": -0.335,
      "recovery_from_retry_pct_proxy": 51,
      "band": "ecc-risk"
    },
    {
      "simulationId": "SA-MEM-NAND3D-001",
      "slug": "3d-nand-string-vt-ecc-retention",
      "layer_group": "bottom",
      "pe_cycles": 8000,
      "retention_days": 1,
      "read_retry_steps": 0,
      "vt_sigma_v_proxy": 0.3874,
      "vt_shift_v_proxy": 0.0298,
      "state_overlap_proxy": 0.2487,
      "raw_ber_proxy": 0.02144,
      "ecc_margin_db_proxy": -3.103,
      "recovery_from_retry_pct_proxy": 0,
      "band": "ecc-risk"
    },
    {
      "simulationId": "SA-MEM-NAND3D-001",
      "slug": "3d-nand-string-vt-ecc-retention",
      "layer_group": "bottom",
      "pe_cycles": 8000,
      "retention_days": 1,
      "read_retry_steps": 2,
      "vt_sigma_v_proxy": 0.3874,
      "vt_shift_v_proxy": 0.0298,
      "state_overlap_proxy": 0.1787,
      "raw_ber_proxy": 0.01724,
      "ecc_margin_db_proxy": -1.209,
      "recovery_from_retry_pct_proxy": 17,
      "band": "ecc-risk"
    },
    {
      "simulationId": "SA-MEM-NAND3D-001",
      "slug": "3d-nand-string-vt-ecc-retention",
      "layer_group": "bottom",
      "pe_cycles": 8000,
      "retention_days": 1,
      "read_retry_steps": 6,
      "vt_sigma_v_proxy": 0.3874,
      "vt_shift_v_proxy": 0.0298,
      "state_overlap_proxy": 0.0387,
      "raw_ber_proxy": 0.00884,
      "ecc_margin_db_proxy": 4.593,
      "recovery_from_retry_pct_proxy": 51,
      "band": "retry-needed"
    },
    {
      "simulationId": "SA-MEM-NAND3D-001",
      "slug": "3d-nand-string-vt-ecc-retention",
      "layer_group": "bottom",
      "pe_cycles": 8000,
      "retention_days": 30,
      "read_retry_steps": 0,
      "vt_sigma_v_proxy": 0.4378,
      "vt_shift_v_proxy": -0.0069,
      "state_overlap_proxy": 0.294,
      "raw_ber_proxy": 0.025991,
      "ecc_margin_db_proxy": -4.775,
      "recovery_from_retry_pct_proxy": 0,
      "band": "ecc-risk"
    },
    {
      "simulationId": "SA-MEM-NAND3D-001",
      "slug": "3d-nand-string-vt-ecc-retention",
      "layer_group": "bottom",
      "pe_cycles": 8000,
      "retention_days": 30,
      "read_retry_steps": 2,
      "vt_sigma_v_proxy": 0.4378,
      "vt_shift_v_proxy": -0.0069,
      "state_overlap_proxy": 0.224,
      "raw_ber_proxy": 0.021791,
      "ecc_margin_db_proxy": -3.244,
      "recovery_from_retry_pct_proxy": 17,
      "band": "ecc-risk"
    },
    {
      "simulationId": "SA-MEM-NAND3D-001",
      "slug": "3d-nand-string-vt-ecc-retention",
      "layer_group": "bottom",
      "pe_cycles": 8000,
      "retention_days": 30,
      "read_retry_steps": 6,
      "vt_sigma_v_proxy": 0.4378,
      "vt_shift_v_proxy": -0.0069,
      "state_overlap_proxy": 0.084,
      "raw_ber_proxy": 0.013391,
      "ecc_margin_db_proxy": 0.986,
      "recovery_from_retry_pct_proxy": 51,
      "band": "ecc-risk"
    },
    {
      "simulationId": "SA-MEM-NAND3D-001",
      "slug": "3d-nand-string-vt-ecc-retention",
      "layer_group": "bottom",
      "pe_cycles": 8000,
      "retention_days": 365,
      "read_retry_steps": 0,
      "vt_sigma_v_proxy": 0.4832,
      "vt_shift_v_proxy": -0.0398,
      "state_overlap_proxy": 0.3348,
      "raw_ber_proxy": 0.03009,
      "ecc_margin_db_proxy": -6.047,
      "recovery_from_retry_pct_proxy": 0,
      "band": "ecc-risk"
    },
    {
      "simulationId": "SA-MEM-NAND3D-001",
      "slug": "3d-nand-string-vt-ecc-retention",
      "layer_group": "bottom",
      "pe_cycles": 8000,
      "retention_days": 365,
      "read_retry_steps": 2,
      "vt_sigma_v_proxy": 0.4832,
      "vt_shift_v_proxy": -0.0398,
      "state_overlap_proxy": 0.2648,
      "raw_ber_proxy": 0.02589,
      "ecc_margin_db_proxy": -4.741,
      "recovery_from_retry_pct_proxy": 17,
      "band": "ecc-risk"
    },
    {
      "simulationId": "SA-MEM-NAND3D-001",
      "slug": "3d-nand-string-vt-ecc-retention",
      "layer_group": "bottom",
      "pe_cycles": 8000,
      "retention_days": 365,
      "read_retry_steps": 6,
      "vt_sigma_v_proxy": 0.4832,
      "vt_shift_v_proxy": -0.0398,
      "state_overlap_proxy": 0.1248,
      "raw_ber_proxy": 0.01749,
      "ecc_margin_db_proxy": -1.334,
      "recovery_from_retry_pct_proxy": 51,
      "band": "ecc-risk"
    },
    {
      "simulationId": "SA-MEM-NAND3D-001",
      "slug": "3d-nand-string-vt-ecc-retention",
      "layer_group": "middle",
      "pe_cycles": 0,
      "retention_days": 1,
      "read_retry_steps": 0,
      "vt_sigma_v_proxy": 0.2217,
      "vt_shift_v_proxy": 0.0021,
      "state_overlap_proxy": 0.0996,
      "raw_ber_proxy": 0.008137,
      "ecc_margin_db_proxy": 5.313,
      "recovery_from_retry_pct_proxy": 0,
      "band": "retry-needed"
    },
    {
      "simulationId": "SA-MEM-NAND3D-001",
      "slug": "3d-nand-string-vt-ecc-retention",
      "layer_group": "middle",
      "pe_cycles": 0,
      "retention_days": 1,
      "read_retry_steps": 2,
      "vt_sigma_v_proxy": 0.2217,
      "vt_shift_v_proxy": 0.0021,
      "state_overlap_proxy": 0.0296,
      "raw_ber_proxy": 0.003937,
      "ecc_margin_db_proxy": 11.619,
      "recovery_from_retry_pct_proxy": 17,
      "band": "comfortable-ecc"
    },
    {
      "simulationId": "SA-MEM-NAND3D-001",
      "slug": "3d-nand-string-vt-ecc-retention",
      "layer_group": "middle",
      "pe_cycles": 0,
      "retention_days": 1,
      "read_retry_steps": 6,
      "vt_sigma_v_proxy": 0.2217,
      "vt_shift_v_proxy": 0.0021,
      "state_overlap_proxy": 0,
      "raw_ber_proxy": 0.002163,
      "ecc_margin_db_proxy": 16.82,
      "recovery_from_retry_pct_proxy": 51,
      "band": "comfortable-ecc"
    },
    {
      "simulationId": "SA-MEM-NAND3D-001",
      "slug": "3d-nand-string-vt-ecc-retention",
      "layer_group": "middle",
      "pe_cycles": 0,
      "retention_days": 30,
      "read_retry_steps": 0,
      "vt_sigma_v_proxy": 0.2721,
      "vt_shift_v_proxy": -0.029,
      "state_overlap_proxy": 0.1449,
      "raw_ber_proxy": 0.012688,
      "ecc_margin_db_proxy": 1.454,
      "recovery_from_retry_pct_proxy": 0,
      "band": "ecc-risk"
    },
    {
      "simulationId": "SA-MEM-NAND3D-001",
      "slug": "3d-nand-string-vt-ecc-retention",
      "layer_group": "middle",
      "pe_cycles": 0,
      "retention_days": 30,
      "read_retry_steps": 2,
      "vt_sigma_v_proxy": 0.2721,
      "vt_shift_v_proxy": -0.029,
      "state_overlap_proxy": 0.0749,
      "raw_ber_proxy": 0.008488,
      "ecc_margin_db_proxy": 4.946,
      "recovery_from_retry_pct_proxy": 17,
      "band": "retry-needed"
    },
    {
      "simulationId": "SA-MEM-NAND3D-001",
      "slug": "3d-nand-string-vt-ecc-retention",
      "layer_group": "middle",
      "pe_cycles": 0,
      "retention_days": 30,
      "read_retry_steps": 6,
      "vt_sigma_v_proxy": 0.2721,
      "vt_shift_v_proxy": -0.029,
      "state_overlap_proxy": 0,
      "raw_ber_proxy": 0.003994,
      "ecc_margin_db_proxy": 11.493,
      "recovery_from_retry_pct_proxy": 51,
      "band": "comfortable-ecc"
    },
    {
      "simulationId": "SA-MEM-NAND3D-001",
      "slug": "3d-nand-string-vt-ecc-retention",
      "layer_group": "middle",
      "pe_cycles": 0,
      "retention_days": 365,
      "read_retry_steps": 0,
      "vt_sigma_v_proxy": 0.3175,
      "vt_shift_v_proxy": -0.057,
      "state_overlap_proxy": 0.1857,
      "raw_ber_proxy": 0.016786,
      "ecc_margin_db_proxy": -0.977,
      "recovery_from_retry_pct_proxy": 0,
      "band": "ecc-risk"
    },
    {
      "simulationId": "SA-MEM-NAND3D-001",
      "slug": "3d-nand-string-vt-ecc-retention",
      "layer_group": "middle",
      "pe_cycles": 0,
      "retention_days": 365,
      "read_retry_steps": 2,
      "vt_sigma_v_proxy": 0.3175,
      "vt_shift_v_proxy": -0.057,
      "state_overlap_proxy": 0.1157,
      "raw_ber_proxy": 0.012586,
      "ecc_margin_db_proxy": 1.524,
      "recovery_from_retry_pct_proxy": 17,
      "band": "retry-needed"
    },
    {
      "simulationId": "SA-MEM-NAND3D-001",
      "slug": "3d-nand-string-vt-ecc-retention",
      "layer_group": "middle",
      "pe_cycles": 0,
      "retention_days": 365,
      "read_retry_steps": 6,
      "vt_sigma_v_proxy": 0.3175,
      "vt_shift_v_proxy": -0.057,
      "state_overlap_proxy": 0,
      "raw_ber_proxy": 0.005644,
      "ecc_margin_db_proxy": 8.49,
      "recovery_from_retry_pct_proxy": 51,
      "band": "comfortable-ecc"
    },
    {
      "simulationId": "SA-MEM-NAND3D-001",
      "slug": "3d-nand-string-vt-ecc-retention",
      "layer_group": "middle",
      "pe_cycles": 1000,
      "retention_days": 1,
      "read_retry_steps": 0,
      "vt_sigma_v_proxy": 0.332,
      "vt_shift_v_proxy": 0.0222,
      "state_overlap_proxy": 0.1988,
      "raw_ber_proxy": 0.017096,
      "ecc_margin_db_proxy": -1.136,
      "recovery_from_retry_pct_proxy": 0,
      "band": "ecc-risk"
    },
    {
      "simulationId": "SA-MEM-NAND3D-001",
      "slug": "3d-nand-string-vt-ecc-retention",
      "layer_group": "middle",
      "pe_cycles": 1000,
      "retention_days": 1,
      "read_retry_steps": 2,
      "vt_sigma_v_proxy": 0.332,
      "vt_shift_v_proxy": 0.0222,
      "state_overlap_proxy": 0.1288,
      "raw_ber_proxy": 0.012896,
      "ecc_margin_db_proxy": 1.313,
      "recovery_from_retry_pct_proxy": 17,
      "band": "ecc-risk"
    },
    {
      "simulationId": "SA-MEM-NAND3D-001",
      "slug": "3d-nand-string-vt-ecc-retention",
      "layer_group": "middle",
      "pe_cycles": 1000,
      "retention_days": 1,
      "read_retry_steps": 6,
      "vt_sigma_v_proxy": 0.332,
      "vt_shift_v_proxy": 0.0222,
      "state_overlap_proxy": 0,
      "raw_ber_proxy": 0.00517,
      "ecc_margin_db_proxy": 9.253,
      "recovery_from_retry_pct_proxy": 51,
      "band": "comfortable-ecc"
    },
    {
      "simulationId": "SA-MEM-NAND3D-001",
      "slug": "3d-nand-string-vt-ecc-retention",
      "layer_group": "middle",
      "pe_cycles": 1000,
      "retention_days": 30,
      "read_retry_steps": 0,
      "vt_sigma_v_proxy": 0.3823,
      "vt_shift_v_proxy": -0.009,
      "state_overlap_proxy": 0.2441,
      "raw_ber_proxy": 0.021647,
      "ecc_margin_db_proxy": -3.186,
      "recovery_from_retry_pct_proxy": 0,
      "band": "ecc-risk"
    },
    {
      "simulationId": "SA-MEM-NAND3D-001",
      "slug": "3d-nand-string-vt-ecc-retention",
      "layer_group": "middle",
      "pe_cycles": 1000,
      "retention_days": 30,
      "read_retry_steps": 2,
      "vt_sigma_v_proxy": 0.3823,
      "vt_shift_v_proxy": -0.009,
      "state_overlap_proxy": 0.1741,
      "raw_ber_proxy": 0.017447,
      "ecc_margin_db_proxy": -1.313,
      "recovery_from_retry_pct_proxy": 17,
      "band": "ecc-risk"
    },
    {
      "simulationId": "SA-MEM-NAND3D-001",
      "slug": "3d-nand-string-vt-ecc-retention",
      "layer_group": "middle",
      "pe_cycles": 1000,
      "retention_days": 30,
      "read_retry_steps": 6,
      "vt_sigma_v_proxy": 0.3823,
      "vt_shift_v_proxy": -0.009,
      "state_overlap_proxy": 0.0341,
      "raw_ber_proxy": 0.009047,
      "ecc_margin_db_proxy": 4.392,
      "recovery_from_retry_pct_proxy": 51,
      "band": "retry-needed"
    },
    {
      "simulationId": "SA-MEM-NAND3D-001",
      "slug": "3d-nand-string-vt-ecc-retention",
      "layer_group": "middle",
      "pe_cycles": 1000,
      "retention_days": 365,
      "read_retry_steps": 0,
      "vt_sigma_v_proxy": 0.4277,
      "vt_shift_v_proxy": -0.037,
      "state_overlap_proxy": 0.2849,
      "raw_ber_proxy": 0.025746,
      "ecc_margin_db_proxy": -4.692,
      "recovery_from_retry_pct_proxy": 0,
      "band": "ecc-risk"
    },
    {
      "simulationId": "SA-MEM-NAND3D-001",
      "slug": "3d-nand-string-vt-ecc-retention",
      "layer_group": "middle",
      "pe_cycles": 1000,
      "retention_days": 365,
      "read_retry_steps": 2,
      "vt_sigma_v_proxy": 0.4277,
      "vt_shift_v_proxy": -0.037,
      "state_overlap_proxy": 0.2149,
      "raw_ber_proxy": 0.021546,
      "ecc_margin_db_proxy": -3.145,
      "recovery_from_retry_pct_proxy": 17,
      "band": "ecc-risk"
    },
    {
      "simulationId": "SA-MEM-NAND3D-001",
      "slug": "3d-nand-string-vt-ecc-retention",
      "layer_group": "middle",
      "pe_cycles": 1000,
      "retention_days": 365,
      "read_retry_steps": 6,
      "vt_sigma_v_proxy": 0.4277,
      "vt_shift_v_proxy": -0.037,
      "state_overlap_proxy": 0.0749,
      "raw_ber_proxy": 0.013146,
      "ecc_margin_db_proxy": 1.146,
      "recovery_from_retry_pct_proxy": 51,
      "band": "ecc-risk"
    },
    {
      "simulationId": "SA-MEM-NAND3D-001",
      "slug": "3d-nand-string-vt-ecc-retention",
      "layer_group": "middle",
      "pe_cycles": 3000,
      "retention_days": 1,
      "read_retry_steps": 0,
      "vt_sigma_v_proxy": 0.3581,
      "vt_shift_v_proxy": 0.0269,
      "state_overlap_proxy": 0.2223,
      "raw_ber_proxy": 0.019216,
      "ecc_margin_db_proxy": -2.151,
      "recovery_from_retry_pct_proxy": 0,
      "band": "ecc-risk"
    },
    {
      "simulationId": "SA-MEM-NAND3D-001",
      "slug": "3d-nand-string-vt-ecc-retention",
      "layer_group": "middle",
      "pe_cycles": 3000,
      "retention_days": 1,
      "read_retry_steps": 2,
      "vt_sigma_v_proxy": 0.3581,
      "vt_shift_v_proxy": 0.0269,
      "state_overlap_proxy": 0.1523,
      "raw_ber_proxy": 0.015016,
      "ecc_margin_db_proxy": -0.009,
      "recovery_from_retry_pct_proxy": 17,
      "band": "ecc-risk"
    },
    {
      "simulationId": "SA-MEM-NAND3D-001",
      "slug": "3d-nand-string-vt-ecc-retention",
      "layer_group": "middle",
      "pe_cycles": 3000,
      "retention_days": 1,
      "read_retry_steps": 6,
      "vt_sigma_v_proxy": 0.3581,
      "vt_shift_v_proxy": 0.0269,
      "state_overlap_proxy": 0.0123,
      "raw_ber_proxy": 0.006616,
      "ecc_margin_db_proxy": 7.11,
      "recovery_from_retry_pct_proxy": 51,
      "band": "retry-needed"
    },
    {
      "simulationId": "SA-MEM-NAND3D-001",
      "slug": "3d-nand-string-vt-ecc-retention",
      "layer_group": "middle",
      "pe_cycles": 3000,
      "retention_days": 30,
      "read_retry_steps": 0,
      "vt_sigma_v_proxy": 0.4084,
      "vt_shift_v_proxy": -0.0042,
      "state_overlap_proxy": 0.2676,
      "raw_ber_proxy": 0.023767,
      "ecc_margin_db_proxy": -3.998,
      "recovery_from_retry_pct_proxy": 0,
      "band": "ecc-risk"
    },
    {
      "simulationId": "SA-MEM-NAND3D-001",
      "slug": "3d-nand-string-vt-ecc-retention",
      "layer_group": "middle",
      "pe_cycles": 3000,
      "retention_days": 30,
      "read_retry_steps": 2,
      "vt_sigma_v_proxy": 0.4084,
      "vt_shift_v_proxy": -0.0042,
      "state_overlap_proxy": 0.1976,
      "raw_ber_proxy": 0.019567,
      "ecc_margin_db_proxy": -2.309,
      "recovery_from_retry_pct_proxy": 17,
      "band": "ecc-risk"
    },
    {
      "simulationId": "SA-MEM-NAND3D-001",
      "slug": "3d-nand-string-vt-ecc-retention",
      "layer_group": "middle",
      "pe_cycles": 3000,
      "retention_days": 30,
      "read_retry_steps": 6,
      "vt_sigma_v_proxy": 0.4084,
      "vt_shift_v_proxy": -0.0042,
      "state_overlap_proxy": 0.0576,
      "raw_ber_proxy": 0.011167,
      "ecc_margin_db_proxy": 2.563,
      "recovery_from_retry_pct_proxy": 51,
      "band": "retry-needed"
    },
    {
      "simulationId": "SA-MEM-NAND3D-001",
      "slug": "3d-nand-string-vt-ecc-retention",
      "layer_group": "middle",
      "pe_cycles": 3000,
      "retention_days": 365,
      "read_retry_steps": 0,
      "vt_sigma_v_proxy": 0.4538,
      "vt_shift_v_proxy": -0.0323,
      "state_overlap_proxy": 0.3084,
      "raw_ber_proxy": 0.027866,
      "ecc_margin_db_proxy": -5.38,
      "recovery_from_retry_pct_proxy": 0,
      "band": "ecc-risk"
    },
    {
      "simulationId": "SA-MEM-NAND3D-001",
      "slug": "3d-nand-string-vt-ecc-retention",
      "layer_group": "middle",
      "pe_cycles": 3000,
      "retention_days": 365,
      "read_retry_steps": 2,
      "vt_sigma_v_proxy": 0.4538,
      "vt_shift_v_proxy": -0.0323,
      "state_overlap_proxy": 0.2384,
      "raw_ber_proxy": 0.023666,
      "ecc_margin_db_proxy": -3.961,
      "recovery_from_retry_pct_proxy": 17,
      "band": "ecc-risk"
    },
    {
      "simulationId": "SA-MEM-NAND3D-001",
      "slug": "3d-nand-string-vt-ecc-retention",
      "layer_group": "middle",
      "pe_cycles": 3000,
      "retention_days": 365,
      "read_retry_steps": 6,
      "vt_sigma_v_proxy": 0.4538,
      "vt_shift_v_proxy": -0.0323,
      "state_overlap_proxy": 0.0984,
      "raw_ber_proxy": 0.015266,
      "ecc_margin_db_proxy": -0.152,
      "recovery_from_retry_pct_proxy": 51,
      "band": "ecc-risk"
    },
    {
      "simulationId": "SA-MEM-NAND3D-001",
      "slug": "3d-nand-string-vt-ecc-retention",
      "layer_group": "middle",
      "pe_cycles": 8000,
      "retention_days": 1,
      "read_retry_steps": 0,
      "vt_sigma_v_proxy": 0.3814,
      "vt_shift_v_proxy": 0.0312,
      "state_overlap_proxy": 0.2433,
      "raw_ber_proxy": 0.021116,
      "ecc_margin_db_proxy": -2.97,
      "recovery_from_retry_pct_proxy": 0,
      "band": "ecc-risk"
    },
    {
      "simulationId": "SA-MEM-NAND3D-001",
      "slug": "3d-nand-string-vt-ecc-retention",
      "layer_group": "middle",
      "pe_cycles": 8000,
      "retention_days": 1,
      "read_retry_steps": 2,
      "vt_sigma_v_proxy": 0.3814,
      "vt_shift_v_proxy": 0.0312,
      "state_overlap_proxy": 0.1733,
      "raw_ber_proxy": 0.016916,
      "ecc_margin_db_proxy": -1.044,
      "recovery_from_retry_pct_proxy": 17,
      "band": "ecc-risk"
    },
    {
      "simulationId": "SA-MEM-NAND3D-001",
      "slug": "3d-nand-string-vt-ecc-retention",
      "layer_group": "middle",
      "pe_cycles": 8000,
      "retention_days": 1,
      "read_retry_steps": 6,
      "vt_sigma_v_proxy": 0.3814,
      "vt_shift_v_proxy": 0.0312,
      "state_overlap_proxy": 0.0333,
      "raw_ber_proxy": 0.008516,
      "ecc_margin_db_proxy": 4.917,
      "recovery_from_retry_pct_proxy": 51,
      "band": "retry-needed"
    },
    {
      "simulationId": "SA-MEM-NAND3D-001",
      "slug": "3d-nand-string-vt-ecc-retention",
      "layer_group": "middle",
      "pe_cycles": 8000,
      "retention_days": 30,
      "read_retry_steps": 0,
      "vt_sigma_v_proxy": 0.4318,
      "vt_shift_v_proxy": 0,
      "state_overlap_proxy": 0.2886,
      "raw_ber_proxy": 0.025667,
      "ecc_margin_db_proxy": -4.666,
      "recovery_from_retry_pct_proxy": 0,
      "band": "ecc-risk"
    },
    {
      "simulationId": "SA-MEM-NAND3D-001",
      "slug": "3d-nand-string-vt-ecc-retention",
      "layer_group": "middle",
      "pe_cycles": 8000,
      "retention_days": 30,
      "read_retry_steps": 2,
      "vt_sigma_v_proxy": 0.4318,
      "vt_shift_v_proxy": 0,
      "state_overlap_proxy": 0.2186,
      "raw_ber_proxy": 0.021467,
      "ecc_margin_db_proxy": -3.114,
      "recovery_from_retry_pct_proxy": 17,
      "band": "ecc-risk"
    },
    {
      "simulationId": "SA-MEM-NAND3D-001",
      "slug": "3d-nand-string-vt-ecc-retention",
      "layer_group": "middle",
      "pe_cycles": 8000,
      "retention_days": 30,
      "read_retry_steps": 6,
      "vt_sigma_v_proxy": 0.4318,
      "vt_shift_v_proxy": 0,
      "state_overlap_proxy": 0.0786,
      "raw_ber_proxy": 0.013067,
      "ecc_margin_db_proxy": 1.198,
      "recovery_from_retry_pct_proxy": 51,
      "band": "ecc-risk"
    },
    {
      "simulationId": "SA-MEM-NAND3D-001",
      "slug": "3d-nand-string-vt-ecc-retention",
      "layer_group": "middle",
      "pe_cycles": 8000,
      "retention_days": 365,
      "read_retry_steps": 0,
      "vt_sigma_v_proxy": 0.4772,
      "vt_shift_v_proxy": -0.028,
      "state_overlap_proxy": 0.3294,
      "raw_ber_proxy": 0.029766,
      "ecc_margin_db_proxy": -5.952,
      "recovery_from_retry_pct_proxy": 0,
      "band": "ecc-risk"
    },
    {
      "simulationId": "SA-MEM-NAND3D-001",
      "slug": "3d-nand-string-vt-ecc-retention",
      "layer_group": "middle",
      "pe_cycles": 8000,
      "retention_days": 365,
      "read_retry_steps": 2,
      "vt_sigma_v_proxy": 0.4772,
      "vt_shift_v_proxy": -0.028,
      "state_overlap_proxy": 0.2594,
      "raw_ber_proxy": 0.025566,
      "ecc_margin_db_proxy": -4.631,
      "recovery_from_retry_pct_proxy": 17,
      "band": "ecc-risk"
    },
    {
      "simulationId": "SA-MEM-NAND3D-001",
      "slug": "3d-nand-string-vt-ecc-retention",
      "layer_group": "middle",
      "pe_cycles": 8000,
      "retention_days": 365,
      "read_retry_steps": 6,
      "vt_sigma_v_proxy": 0.4772,
      "vt_shift_v_proxy": -0.028,
      "state_overlap_proxy": 0.1194,
      "raw_ber_proxy": 0.017166,
      "ecc_margin_db_proxy": -1.171,
      "recovery_from_retry_pct_proxy": 51,
      "band": "ecc-risk"
    },
    {
      "simulationId": "SA-MEM-NAND3D-001",
      "slug": "3d-nand-string-vt-ecc-retention",
      "layer_group": "top",
      "pe_cycles": 0,
      "retention_days": 1,
      "read_retry_steps": 0,
      "vt_sigma_v_proxy": 0.2337,
      "vt_shift_v_proxy": -0.0007,
      "state_overlap_proxy": 0.1104,
      "raw_ber_proxy": 0.008785,
      "ecc_margin_db_proxy": 4.647,
      "recovery_from_retry_pct_proxy": 0,
      "band": "retry-needed"
    },
    {
      "simulationId": "SA-MEM-NAND3D-001",
      "slug": "3d-nand-string-vt-ecc-retention",
      "layer_group": "top",
      "pe_cycles": 0,
      "retention_days": 1,
      "read_retry_steps": 2,
      "vt_sigma_v_proxy": 0.2337,
      "vt_shift_v_proxy": -0.0007,
      "state_overlap_proxy": 0.0404,
      "raw_ber_proxy": 0.004585,
      "ecc_margin_db_proxy": 10.295,
      "recovery_from_retry_pct_proxy": 17,
      "band": "comfortable-ecc"
    },
    {
      "simulationId": "SA-MEM-NAND3D-001",
      "slug": "3d-nand-string-vt-ecc-retention",
      "layer_group": "top",
      "pe_cycles": 0,
      "retention_days": 1,
      "read_retry_steps": 6,
      "vt_sigma_v_proxy": 0.2337,
      "vt_shift_v_proxy": -0.0007,
      "state_overlap_proxy": 0,
      "raw_ber_proxy": 0.002163,
      "ecc_margin_db_proxy": 16.82,
      "recovery_from_retry_pct_proxy": 51,
      "band": "comfortable-ecc"
    },
    {
      "simulationId": "SA-MEM-NAND3D-001",
      "slug": "3d-nand-string-vt-ecc-retention",
      "layer_group": "top",
      "pe_cycles": 0,
      "retention_days": 30,
      "read_retry_steps": 0,
      "vt_sigma_v_proxy": 0.2841,
      "vt_shift_v_proxy": -0.0428,
      "state_overlap_proxy": 0.1557,
      "raw_ber_proxy": 0.013336,
      "ecc_margin_db_proxy": 1.022,
      "recovery_from_retry_pct_proxy": 0,
      "band": "ecc-risk"
    },
    {
      "simulationId": "SA-MEM-NAND3D-001",
      "slug": "3d-nand-string-vt-ecc-retention",
      "layer_group": "top",
      "pe_cycles": 0,
      "retention_days": 30,
      "read_retry_steps": 2,
      "vt_sigma_v_proxy": 0.2841,
      "vt_shift_v_proxy": -0.0428,
      "state_overlap_proxy": 0.0857,
      "raw_ber_proxy": 0.009136,
      "ecc_margin_db_proxy": 4.307,
      "recovery_from_retry_pct_proxy": 17,
      "band": "retry-needed"
    },
    {
      "simulationId": "SA-MEM-NAND3D-001",
      "slug": "3d-nand-string-vt-ecc-retention",
      "layer_group": "top",
      "pe_cycles": 0,
      "retention_days": 30,
      "read_retry_steps": 6,
      "vt_sigma_v_proxy": 0.2841,
      "vt_shift_v_proxy": -0.0428,
      "state_overlap_proxy": 0,
      "raw_ber_proxy": 0.003994,
      "ecc_margin_db_proxy": 11.493,
      "recovery_from_retry_pct_proxy": 51,
      "band": "comfortable-ecc"
    },
    {
      "simulationId": "SA-MEM-NAND3D-001",
      "slug": "3d-nand-string-vt-ecc-retention",
      "layer_group": "top",
      "pe_cycles": 0,
      "retention_days": 365,
      "read_retry_steps": 0,
      "vt_sigma_v_proxy": 0.3295,
      "vt_shift_v_proxy": -0.0807,
      "state_overlap_proxy": 0.1965,
      "raw_ber_proxy": 0.017434,
      "ecc_margin_db_proxy": -1.306,
      "recovery_from_retry_pct_proxy": 0,
      "band": "ecc-risk"
    },
    {
      "simulationId": "SA-MEM-NAND3D-001",
      "slug": "3d-nand-string-vt-ecc-retention",
      "layer_group": "top",
      "pe_cycles": 0,
      "retention_days": 365,
      "read_retry_steps": 2,
      "vt_sigma_v_proxy": 0.3295,
      "vt_shift_v_proxy": -0.0807,
      "state_overlap_proxy": 0.1265,
      "raw_ber_proxy": 0.013234,
      "ecc_margin_db_proxy": 1.088,
      "recovery_from_retry_pct_proxy": 17,
      "band": "ecc-risk"
    },
    {
      "simulationId": "SA-MEM-NAND3D-001",
      "slug": "3d-nand-string-vt-ecc-retention",
      "layer_group": "top",
      "pe_cycles": 0,
      "retention_days": 365,
      "read_retry_steps": 6,
      "vt_sigma_v_proxy": 0.3295,
      "vt_shift_v_proxy": -0.0807,
      "state_overlap_proxy": 0,
      "raw_ber_proxy": 0.005644,
      "ecc_margin_db_proxy": 8.49,
      "recovery_from_retry_pct_proxy": 51,
      "band": "comfortable-ecc"
    },
    {
      "simulationId": "SA-MEM-NAND3D-001",
      "slug": "3d-nand-string-vt-ecc-retention",
      "layer_group": "top",
      "pe_cycles": 1000,
      "retention_days": 1,
      "read_retry_steps": 0,
      "vt_sigma_v_proxy": 0.344,
      "vt_shift_v_proxy": 0.0194,
      "state_overlap_proxy": 0.2096,
      "raw_ber_proxy": 0.017744,
      "ecc_margin_db_proxy": -1.459,
      "recovery_from_retry_pct_proxy": 0,
      "band": "ecc-risk"
    },
    {
      "simulationId": "SA-MEM-NAND3D-001",
      "slug": "3d-nand-string-vt-ecc-retention",
      "layer_group": "top",
      "pe_cycles": 1000,
      "retention_days": 1,
      "read_retry_steps": 2,
      "vt_sigma_v_proxy": 0.344,
      "vt_shift_v_proxy": 0.0194,
      "state_overlap_proxy": 0.1396,
      "raw_ber_proxy": 0.013544,
      "ecc_margin_db_proxy": 0.887,
      "recovery_from_retry_pct_proxy": 17,
      "band": "ecc-risk"
    },
    {
      "simulationId": "SA-MEM-NAND3D-001",
      "slug": "3d-nand-string-vt-ecc-retention",
      "layer_group": "top",
      "pe_cycles": 1000,
      "retention_days": 1,
      "read_retry_steps": 6,
      "vt_sigma_v_proxy": 0.344,
      "vt_shift_v_proxy": 0.0194,
      "state_overlap_proxy": 0,
      "raw_ber_proxy": 0.00517,
      "ecc_margin_db_proxy": 9.253,
      "recovery_from_retry_pct_proxy": 51,
      "band": "comfortable-ecc"
    },
    {
      "simulationId": "SA-MEM-NAND3D-001",
      "slug": "3d-nand-string-vt-ecc-retention",
      "layer_group": "top",
      "pe_cycles": 1000,
      "retention_days": 30,
      "read_retry_steps": 0,
      "vt_sigma_v_proxy": 0.3943,
      "vt_shift_v_proxy": -0.0227,
      "state_overlap_proxy": 0.2549,
      "raw_ber_proxy": 0.022295,
      "ecc_margin_db_proxy": -3.442,
      "recovery_from_retry_pct_proxy": 0,
      "band": "ecc-risk"
    },
    {
      "simulationId": "SA-MEM-NAND3D-001",
      "slug": "3d-nand-string-vt-ecc-retention",
      "layer_group": "top",
      "pe_cycles": 1000,
      "retention_days": 30,
      "read_retry_steps": 2,
      "vt_sigma_v_proxy": 0.3943,
      "vt_shift_v_proxy": -0.0227,
      "state_overlap_proxy": 0.1849,
      "raw_ber_proxy": 0.018095,
      "ecc_margin_db_proxy": -1.629,
      "recovery_from_retry_pct_proxy": 17,
      "band": "ecc-risk"
    },
    {
      "simulationId": "SA-MEM-NAND3D-001",
      "slug": "3d-nand-string-vt-ecc-retention",
      "layer_group": "top",
      "pe_cycles": 1000,
      "retention_days": 30,
      "read_retry_steps": 6,
      "vt_sigma_v_proxy": 0.3943,
      "vt_shift_v_proxy": -0.0227,
      "state_overlap_proxy": 0.0449,
      "raw_ber_proxy": 0.009695,
      "ecc_margin_db_proxy": 3.791,
      "recovery_from_retry_pct_proxy": 51,
      "band": "retry-needed"
    },
    {
      "simulationId": "SA-MEM-NAND3D-001",
      "slug": "3d-nand-string-vt-ecc-retention",
      "layer_group": "top",
      "pe_cycles": 1000,
      "retention_days": 365,
      "read_retry_steps": 0,
      "vt_sigma_v_proxy": 0.4397,
      "vt_shift_v_proxy": -0.0607,
      "state_overlap_proxy": 0.2957,
      "raw_ber_proxy": 0.026394,
      "ecc_margin_db_proxy": -4.908,
      "recovery_from_retry_pct_proxy": 0,
      "band": "ecc-risk"
    },
    {
      "simulationId": "SA-MEM-NAND3D-001",
      "slug": "3d-nand-string-vt-ecc-retention",
      "layer_group": "top",
      "pe_cycles": 1000,
      "retention_days": 365,
      "read_retry_steps": 2,
      "vt_sigma_v_proxy": 0.4397,
      "vt_shift_v_proxy": -0.0607,
      "state_overlap_proxy": 0.2257,
      "raw_ber_proxy": 0.022194,
      "ecc_margin_db_proxy": -3.403,
      "recovery_from_retry_pct_proxy": 17,
      "band": "ecc-risk"
    },
    {
      "simulationId": "SA-MEM-NAND3D-001",
      "slug": "3d-nand-string-vt-ecc-retention",
      "layer_group": "top",
      "pe_cycles": 1000,
      "retention_days": 365,
      "read_retry_steps": 6,
      "vt_sigma_v_proxy": 0.4397,
      "vt_shift_v_proxy": -0.0607,
      "state_overlap_proxy": 0.0857,
      "raw_ber_proxy": 0.013794,
      "ecc_margin_db_proxy": 0.728,
      "recovery_from_retry_pct_proxy": 51,
      "band": "ecc-risk"
    },
    {
      "simulationId": "SA-MEM-NAND3D-001",
      "slug": "3d-nand-string-vt-ecc-retention",
      "layer_group": "top",
      "pe_cycles": 3000,
      "retention_days": 1,
      "read_retry_steps": 0,
      "vt_sigma_v_proxy": 0.3701,
      "vt_shift_v_proxy": 0.0241,
      "state_overlap_proxy": 0.2331,
      "raw_ber_proxy": 0.019864,
      "ecc_margin_db_proxy": -2.44,
      "recovery_from_retry_pct_proxy": 0,
      "band": "ecc-risk"
    },
    {
      "simulationId": "SA-MEM-NAND3D-001",
      "slug": "3d-nand-string-vt-ecc-retention",
      "layer_group": "top",
      "pe_cycles": 3000,
      "retention_days": 1,
      "read_retry_steps": 2,
      "vt_sigma_v_proxy": 0.3701,
      "vt_shift_v_proxy": 0.0241,
      "state_overlap_proxy": 0.1631,
      "raw_ber_proxy": 0.015664,
      "ecc_margin_db_proxy": -0.376,
      "recovery_from_retry_pct_proxy": 17,
      "band": "ecc-risk"
    },
    {
      "simulationId": "SA-MEM-NAND3D-001",
      "slug": "3d-nand-string-vt-ecc-retention",
      "layer_group": "top",
      "pe_cycles": 3000,
      "retention_days": 1,
      "read_retry_steps": 6,
      "vt_sigma_v_proxy": 0.3701,
      "vt_shift_v_proxy": 0.0241,
      "state_overlap_proxy": 0.0231,
      "raw_ber_proxy": 0.007264,
      "ecc_margin_db_proxy": 6.298,
      "recovery_from_retry_pct_proxy": 51,
      "band": "retry-needed"
    },
    {
      "simulationId": "SA-MEM-NAND3D-001",
      "slug": "3d-nand-string-vt-ecc-retention",
      "layer_group": "top",
      "pe_cycles": 3000,
      "retention_days": 30,
      "read_retry_steps": 0,
      "vt_sigma_v_proxy": 0.4204,
      "vt_shift_v_proxy": -0.018,
      "state_overlap_proxy": 0.2784,
      "raw_ber_proxy": 0.024415,
      "ecc_margin_db_proxy": -4.231,
      "recovery_from_retry_pct_proxy": 0,
      "band": "ecc-risk"
    },
    {
      "simulationId": "SA-MEM-NAND3D-001",
      "slug": "3d-nand-string-vt-ecc-retention",
      "layer_group": "top",
      "pe_cycles": 3000,
      "retention_days": 30,
      "read_retry_steps": 2,
      "vt_sigma_v_proxy": 0.4204,
      "vt_shift_v_proxy": -0.018,
      "state_overlap_proxy": 0.2084,
      "raw_ber_proxy": 0.020215,
      "ecc_margin_db_proxy": -2.592,
      "recovery_from_retry_pct_proxy": 17,
      "band": "ecc-risk"
    },
    {
      "simulationId": "SA-MEM-NAND3D-001",
      "slug": "3d-nand-string-vt-ecc-retention",
      "layer_group": "top",
      "pe_cycles": 3000,
      "retention_days": 30,
      "read_retry_steps": 6,
      "vt_sigma_v_proxy": 0.4204,
      "vt_shift_v_proxy": -0.018,
      "state_overlap_proxy": 0.0684,
      "raw_ber_proxy": 0.011815,
      "ecc_margin_db_proxy": 2.073,
      "recovery_from_retry_pct_proxy": 51,
      "band": "retry-needed"
    },
    {
      "simulationId": "SA-MEM-NAND3D-001",
      "slug": "3d-nand-string-vt-ecc-retention",
      "layer_group": "top",
      "pe_cycles": 3000,
      "retention_days": 365,
      "read_retry_steps": 0,
      "vt_sigma_v_proxy": 0.4658,
      "vt_shift_v_proxy": -0.0559,
      "state_overlap_proxy": 0.3192,
      "raw_ber_proxy": 0.028514,
      "ecc_margin_db_proxy": -5.579,
      "recovery_from_retry_pct_proxy": 0,
      "band": "ecc-risk"
    },
    {
      "simulationId": "SA-MEM-NAND3D-001",
      "slug": "3d-nand-string-vt-ecc-retention",
      "layer_group": "top",
      "pe_cycles": 3000,
      "retention_days": 365,
      "read_retry_steps": 2,
      "vt_sigma_v_proxy": 0.4658,
      "vt_shift_v_proxy": -0.0559,
      "state_overlap_proxy": 0.2492,
      "raw_ber_proxy": 0.024314,
      "ecc_margin_db_proxy": -4.195,
      "recovery_from_retry_pct_proxy": 17,
      "band": "ecc-risk"
    },
    {
      "simulationId": "SA-MEM-NAND3D-001",
      "slug": "3d-nand-string-vt-ecc-retention",
      "layer_group": "top",
      "pe_cycles": 3000,
      "retention_days": 365,
      "read_retry_steps": 6,
      "vt_sigma_v_proxy": 0.4658,
      "vt_shift_v_proxy": -0.0559,
      "state_overlap_proxy": 0.1092,
      "raw_ber_proxy": 0.015914,
      "ecc_margin_db_proxy": -0.514,
      "recovery_from_retry_pct_proxy": 51,
      "band": "ecc-risk"
    },
    {
      "simulationId": "SA-MEM-NAND3D-001",
      "slug": "3d-nand-string-vt-ecc-retention",
      "layer_group": "top",
      "pe_cycles": 8000,
      "retention_days": 1,
      "read_retry_steps": 0,
      "vt_sigma_v_proxy": 0.3934,
      "vt_shift_v_proxy": 0.0284,
      "state_overlap_proxy": 0.2541,
      "raw_ber_proxy": 0.021764,
      "ecc_margin_db_proxy": -3.233,
      "recovery_from_retry_pct_proxy": 0,
      "band": "ecc-risk"
    },
    {
      "simulationId": "SA-MEM-NAND3D-001",
      "slug": "3d-nand-string-vt-ecc-retention",
      "layer_group": "top",
      "pe_cycles": 8000,
      "retention_days": 1,
      "read_retry_steps": 2,
      "vt_sigma_v_proxy": 0.3934,
      "vt_shift_v_proxy": 0.0284,
      "state_overlap_proxy": 0.1841,
      "raw_ber_proxy": 0.017564,
      "ecc_margin_db_proxy": -1.371,
      "recovery_from_retry_pct_proxy": 17,
      "band": "ecc-risk"
    },
    {
      "simulationId": "SA-MEM-NAND3D-001",
      "slug": "3d-nand-string-vt-ecc-retention",
      "layer_group": "top",
      "pe_cycles": 8000,
      "retention_days": 1,
      "read_retry_steps": 6,
      "vt_sigma_v_proxy": 0.3934,
      "vt_shift_v_proxy": 0.0284,
      "state_overlap_proxy": 0.0441,
      "raw_ber_proxy": 0.009164,
      "ecc_margin_db_proxy": 4.28,
      "recovery_from_retry_pct_proxy": 51,
      "band": "retry-needed"
    },
    {
      "simulationId": "SA-MEM-NAND3D-001",
      "slug": "3d-nand-string-vt-ecc-retention",
      "layer_group": "top",
      "pe_cycles": 8000,
      "retention_days": 30,
      "read_retry_steps": 0,
      "vt_sigma_v_proxy": 0.4438,
      "vt_shift_v_proxy": -0.0137,
      "state_overlap_proxy": 0.2994,
      "raw_ber_proxy": 0.026315,
      "ecc_margin_db_proxy": -4.882,
      "recovery_from_retry_pct_proxy": 0,
      "band": "ecc-risk"
    },
    {
      "simulationId": "SA-MEM-NAND3D-001",
      "slug": "3d-nand-string-vt-ecc-retention",
      "layer_group": "top",
      "pe_cycles": 8000,
      "retention_days": 30,
      "read_retry_steps": 2,
      "vt_sigma_v_proxy": 0.4438,
      "vt_shift_v_proxy": -0.0137,
      "state_overlap_proxy": 0.2294,
      "raw_ber_proxy": 0.022115,
      "ecc_margin_db_proxy": -3.372,
      "recovery_from_retry_pct_proxy": 17,
      "band": "ecc-risk"
    },
    {
      "simulationId": "SA-MEM-NAND3D-001",
      "slug": "3d-nand-string-vt-ecc-retention",
      "layer_group": "top",
      "pe_cycles": 8000,
      "retention_days": 30,
      "read_retry_steps": 6,
      "vt_sigma_v_proxy": 0.4438,
      "vt_shift_v_proxy": -0.0137,
      "state_overlap_proxy": 0.0894,
      "raw_ber_proxy": 0.013715,
      "ecc_margin_db_proxy": 0.778,
      "recovery_from_retry_pct_proxy": 51,
      "band": "ecc-risk"
    },
    {
      "simulationId": "SA-MEM-NAND3D-001",
      "slug": "3d-nand-string-vt-ecc-retention",
      "layer_group": "top",
      "pe_cycles": 8000,
      "retention_days": 365,
      "read_retry_steps": 0,
      "vt_sigma_v_proxy": 0.4892,
      "vt_shift_v_proxy": -0.0517,
      "state_overlap_proxy": 0.3402,
      "raw_ber_proxy": 0.030414,
      "ecc_margin_db_proxy": -6.14,
      "recovery_from_retry_pct_proxy": 0,
      "band": "ecc-risk"
    },
    {
      "simulationId": "SA-MEM-NAND3D-001",
      "slug": "3d-nand-string-vt-ecc-retention",
      "layer_group": "top",
      "pe_cycles": 8000,
      "retention_days": 365,
      "read_retry_steps": 2,
      "vt_sigma_v_proxy": 0.4892,
      "vt_shift_v_proxy": -0.0517,
      "state_overlap_proxy": 0.2702,
      "raw_ber_proxy": 0.026214,
      "ecc_margin_db_proxy": -4.849,
      "recovery_from_retry_pct_proxy": 17,
      "band": "ecc-risk"
    },
    {
      "simulationId": "SA-MEM-NAND3D-001",
      "slug": "3d-nand-string-vt-ecc-retention",
      "layer_group": "top",
      "pe_cycles": 8000,
      "retention_days": 365,
      "read_retry_steps": 6,
      "vt_sigma_v_proxy": 0.4892,
      "vt_shift_v_proxy": -0.0517,
      "state_overlap_proxy": 0.1302,
      "raw_ber_proxy": 0.017814,
      "ecc_margin_db_proxy": -1.493,
      "recovery_from_retry_pct_proxy": 51,
      "band": "ecc-risk"
    }
  ]
}