{
  "version": "1.0",
  "sourceId": "vaknin-lachish-revetment-2024",
  "siteId": "lachish",
  "context": "LC08 burnt mudbrick tower-buttress incorporated into the Outer Revetment Wall; magnetic firing most plausibly linked to the 701 BCE Assyrian siege.",
  "directions": [
    {
      "sample": "LC08D",
      "declinationDeg": 11.6,
      "inclinationDeg": 50.8,
      "acceptedSpecimens": 9,
      "measuredSpecimens": 9,
      "k": 1311,
      "alpha95Deg": 1.4
    },
    {
      "sample": "LC08E",
      "declinationDeg": 0.6,
      "inclinationDeg": 56.2,
      "acceptedSpecimens": 6,
      "measuredSpecimens": 6,
      "k": 643,
      "alpha95Deg": 2.6
    },
    {
      "sample": "LC08F",
      "declinationDeg": 0.4,
      "inclinationDeg": 52.0,
      "acceptedSpecimens": 8,
      "measuredSpecimens": 8,
      "k": 785,
      "alpha95Deg": 2.0
    },
    {
      "sample": "LC08G",
      "declinationDeg": 357.9,
      "inclinationDeg": 53.2,
      "acceptedSpecimens": 8,
      "measuredSpecimens": 8,
      "k": 1039,
      "alpha95Deg": 1.7
    },
    {
      "sample": "LC08H",
      "declinationDeg": 358.9,
      "inclinationDeg": 52.9,
      "acceptedSpecimens": 7,
      "measuredSpecimens": 7,
      "k": 1468,
      "alpha95Deg": 1.6
    },
    {
      "sample": "LC08I",
      "declinationDeg": 359.3,
      "inclinationDeg": 54.0,
      "acceptedSpecimens": 7,
      "measuredSpecimens": 7,
      "k": 1376,
      "alpha95Deg": 1.6
    },
    {
      "sample": "LC08J",
      "declinationDeg": 2.0,
      "inclinationDeg": 55.7,
      "acceptedSpecimens": 6,
      "measuredSpecimens": 6,
      "k": 1702,
      "alpha95Deg": 1.6
    },
    {
      "sample": "LC08K",
      "declinationDeg": 4.0,
      "inclinationDeg": 58.2,
      "acceptedSpecimens": 7,
      "measuredSpecimens": 7,
      "k": 3621,
      "alpha95Deg": 1.0
    },
    {
      "sample": "LC08L",
      "declinationDeg": 354.9,
      "inclinationDeg": 52.6,
      "acceptedSpecimens": 7,
      "measuredSpecimens": 7,
      "k": 818,
      "alpha95Deg": 2.1
    },
    {
      "sample": "LC08M",
      "declinationDeg": 9.5,
      "inclinationDeg": 52.9,
      "acceptedSpecimens": 8,
      "measuredSpecimens": 8,
      "k": 4002,
      "alpha95Deg": 0.9
    }
  ],
  "palaeointensity": [
    {
      "sample": "LC08A",
      "acceptedSpecimens": 3,
      "measuredSpecimens": 3,
      "meanMicrotesla": 91.75,
      "stdevOptSigmaMicrotesla": 0.04,
      "lowerErrorMicrotesla": 88.63,
      "upperErrorMicrotesla": 93.46
    },
    {
      "sample": "LC08B",
      "acceptedSpecimens": 3,
      "measuredSpecimens": 3,
      "meanMicrotesla": 82.95,
      "stdevOptSigmaMicrotesla": 0.05,
      "lowerErrorMicrotesla": 81.29,
      "upperErrorMicrotesla": 85.34
    },
    {
      "sample": "LC08C",
      "acceptedSpecimens": 3,
      "measuredSpecimens": 3,
      "meanMicrotesla": 81.93,
      "stdevOptSigmaMicrotesla": 0.04,
      "lowerErrorMicrotesla": 80.7,
      "upperErrorMicrotesla": 89.43
    },
    {
      "sample": "LC08D",
      "acceptedSpecimens": 3,
      "measuredSpecimens": 3,
      "meanMicrotesla": 88.11,
      "stdevOptSigmaMicrotesla": 0.06,
      "lowerErrorMicrotesla": 81.96,
      "upperErrorMicrotesla": 91.52
    },
    {
      "sample": "LC08F",
      "acceptedSpecimens": 3,
      "measuredSpecimens": 3,
      "meanMicrotesla": 99.84,
      "stdevOptSigmaMicrotesla": 0.16,
      "lowerErrorMicrotesla": 94.18,
      "upperErrorMicrotesla": 104.07
    },
    {
      "sample": "LC08J",
      "acceptedSpecimens": 3,
      "measuredSpecimens": 3,
      "meanMicrotesla": 90.8,
      "stdevOptSigmaMicrotesla": 0.43,
      "lowerErrorMicrotesla": 83.79,
      "upperErrorMicrotesla": 91.13
    },
    {
      "sample": "LC08K",
      "acceptedSpecimens": 3,
      "measuredSpecimens": 3,
      "meanMicrotesla": 90.6,
      "stdevOptSigmaMicrotesla": 0.32,
      "lowerErrorMicrotesla": 86.48,
      "upperErrorMicrotesla": 91.56
    },
    {
      "sample": "LC08L",
      "acceptedSpecimens": 3,
      "measuredSpecimens": 3,
      "meanMicrotesla": 93.09,
      "stdevOptSigmaMicrotesla": 0.34,
      "lowerErrorMicrotesla": 86.36,
      "upperErrorMicrotesla": 93.74
    }
  ],
  "directionSpecimens": {
    "accepted": 73,
    "measured": 73,
    "sampleCount": 10
  },
  "intensitySpecimens": {
    "accepted": 24,
    "measured": 24,
    "brickCount": 8
  },
  "descriptiveBrickMeanMicrotesla": 89.88,
  "descriptiveBrickMeanStdDevMicrotesla": 5.72,
  "descriptiveMeanCaution": "Simple unweighted descriptive mean of the eight published brick-level mean values; this is not substituted for the source paper's STDEV-OPT group estimator.",
  "quality": "All 73 direction specimens and all 24 palaeointensity specimens passed the stated acceptance criteria. Individual direction samples have k > 640 and alpha95 <= 2.6 degrees.",
  "interpretation": "LC08 palaeointensity overlaps the independently anchored Lachish Level III gate-area 701 BCE record. The authors conclude that 701 BCE is compatible with the archaeomagnetic age and best fits the archaeological context.",
  "caution": "The 701 BCE calendar attribution is not generated from these brick values alone; it results from combining archaeology, historical evidence and magnetic comparison with the Level III gate anchor."
}