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 "survey": "Black Cat Bore Magnetotelluric Survey 2022 (Geological Survey of Queensland)",
 "survey_id": "black-cat-bore-2022",
 "country": "Australia",
 "organisation": "Geological Survey of Queensland",
 "location": {
  "lat": -19.546278,
  "lon": 140.141944
 },
 "data": {
  "type": "AMT",
  "n_periods": 100,
  "period_min_s": 0.0001,
  "period_max_s": 2912.71072
 },
 "diagnostics": {
  "median_relative_error": 0.0,
  "remote_reference": true,
  "tipper_available": true,
  "completeness_smoothness_diagnostic": {
   "value": 5.0,
   "basis": "e",
   "note": "not a quality or geological-value judgement"
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  "classification": "3-D",
  "skew_beta_median_deg": 0.8,
  "pct_periods_3d": 41,
  "method": "phase-tensor (Caldwell 2004)",
  "note": "screening diagnostic, not an interpretation product"
 },
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  "algorithm": null,
  "remote_reference": true,
  "remote_site": "BC079",
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  "note": "PROJECT NAME: Red Metal_Q2_2022\nUNIQUE ID: {7d862725-e9fe-4d2d-ba4c-5916f4aefcea}\nPROCESS DATE: 2022-04-13 16:24\nDURATION: 14 h 35 m \nDECLINATION: 6°\nCOORDINATES: -19° 32' 46.6\", 140° 8' 31.0\"\nGPS (MIN - MAX): 8 - 12\nTEMPERATURE (MIN - MAX): 44° - 62°\nCOMB FILTER: 50HZ\nFINE ROBUST: ENABLED\nROBUST ALGORITHM: Multiple Coherence, RATIO: 0.25, ATTACK: 0.75\nEDITING WORKBENCH\nTOTOAL REJECTED CROSSPOWERS: 4.6974%\nROBUST ALGORITHM: Multiple Coherence, ATTACK: 0.85, RATIO: 25% \nSTATIONS\nELECTRICS\nRECORDING ID: 10118_2022-04-12-030726\nINSTRUMENT TYPE: MTU-5C\nSTATION NAME: BC070\nOPERATOR: PW\nAZIMUTH: 0\nEX\nTAG: E1\nLENGTH: 80 [m]\nAC: 1.25 [V]\nDC: -0.00526428 [V]\nNEGATIVE RES: 384.23 [Ω]\nPOSITIVE RES: 320.01 [Ω]\nSATURATION: 0.00447619%\nMIN VALUE: -0.625 [V]\nMAX VALUE: 0.625 [V]\nEY\nTAG: E2\nLENGTH: 80 [m]\nAC: 1.25 [V]\nDC: -0.00457764 [V]\nNEGATIVE RES: 318.965 [Ω]\nPOSITIVE RES: 300.06 [Ω]\nSATURATION: 0.00228571%\nMIN VALUE: -0.625 [V]\nMAX VALUE: 0.625 [V]\nMAGNETICS\nRECORDING ID: 10118_2022-04-12-030726\nINSTRUMENT TYPE: MTU-5C\nSTATION NAME: BC070\nOPERATOR: PW\nAZIMUTH: 0\nHX\nTAG: H1\nSENSOR TYPE: MTC-150\nDETECTED SENSOR TYPE: MTC-150\nAC: 2.39806 [V]\nDC: 0.0431824 [V]\nCAL NAME: --- \nSENSOR SERIAL: 54887\nSATURATION: 9.52381e-5 %\nMIN VALUE: -1.25 [V]\nMAX VALUE: 1.14806 [V]\nHY\nTAG: H2\nSENSOR TYPE: MTC-150\nDETECTED SENSOR TYPE: MTC-150\nAC: 1.63801 [V]\nDC: -0.0299072 [V]\nCAL NAME: --- \nSENSOR SERIAL: 54881\nSATURATION: 0 %\nMIN VALUE: -0.870242 [V]\nMAX VALUE: 0.767765 [V]\nHZ\nTAG: H3\nSENSOR TYPE: MTC-150\nDETECTED SENSOR TYPE: MTC-150\nAC: 0.427544 [V]\nDC: -0.0382996 [V]\nCAL NAME: --- \nSENSOR SERIAL: 53227\nSATURATION: 0 %\nMIN VALUE: -0.0506076 [V]\nMAX VALUE: 0.376936 [V]\nREFERENCE\nRECORDING ID: 10195_2022-04-12-021104\nINSTRUMENT TYPE: MTU-5C\nSTATION NAME: BC079\nOPERATOR: PW\nAZIMUTH: 0\nRX\nTAG: H1\nSENSOR TYPE: MTC-150\nDETECTED SENSOR TYPE: MTC-150\nAC: 2.39806 [V]\nDC: 0.0431824 [V]\nCAL NAME: --- \nSENSOR SERIAL: 54887\nSATURATION: 9.52381e-5 %\nMIN VALUE: -1.25 [V]\nMAX VALUE: 1.14806 [V]\nRY\nTAG: H1\nSENSOR TYPE: MTC-150\nDETECTED SENSOR TYPE: MTC-150\nAC: 2.39806 [V]\nDC: 0.0431824 [V]\nCAL NAME: --- \nSENSOR SERIAL: 54887\nSATURATION: 9.52381e-5 %\nMIN VALUE: -1.25 [V]\nMAX VALUE: 1.14806 [V]"
 },
 "distribution": {
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  "license": "CC-BY-4.0",
  "edi_path": "edi/black-cat-bore-2022/BC070.edi"
 },
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   "mt_metadata": "1.0.10",
   "mth5": "0.6.8"
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  "git_commit": "e208b15fb70740d8c44de51c532e6debd59c4e24",
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    "beta_per_period_deg": 3.0,
    "skew_3d_deg": 5.0,
    "pct_periods_3d_threshold": 40,
    "ellip_2d_deg": 0.1,
    "min_rez_row_sine": 0.01,
    "beta_physical_cap_deg": 15.0,
    "min_usable_period_frac": 0.5,
    "skew_aggregation": "median"
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   "diagnostic": "completeness/smoothness (median rel error + coverage + smoothness)"
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  "generated": "2026-09-20T04:08:35.832153+00:00",
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  "input_sha256": "c691e7d96f226877190a4bdfbed7fcf33157cb23b96f3bba08787dc4c1b95511",
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 },
 "coordinate_qc": null,
 "canonical_conditioning": null,
 "frame": {
  "convention_check": {
   "detail": null,
   "n_periods_used": 98,
   "phs_xy_median_deg": 30.83,
   "phs_yx_median_deg": -134.57,
   "verdict": "ok"
  },
  "declared_azimuth_deg": 0.0,
  "derotated": false,
  "evidence": {
   "branch": "spectra",
   "emeas_azimuths": {
    "ex": null,
    "ey": null
   },
   "hmeas_azimuths": {
    "hx": 0.0,
    "hy": 90.0
   },
   "rotspec": "0",
   "trot": null,
   "zrot": null
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  "frame_served": "declared-zero",
  "impedance_rotation_deg_source": null,
  "tipper_rotation_deg_source": null
 },
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   "kind": "transfer_function",
   "format": "edi",
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