{
  "generated": "2026-11-02T03:51:07.090114Z",
  "snapshots": 2159,
  "bands": [
    {
      "f0": 24.0,
      "f1": 42.6,
      "db": -5.7,
      "n": 2159
    },
    {
      "f0": 42.6,
      "f1": 61.2,
      "db": -7.2,
      "n": 2159
    },
    {
      "f0": 61.2,
      "f1": 79.8,
      "db": 0.1,
      "n": 2159
    },
    {
      "f0": 79.8,
      "f1": 98.3,
      "db": -8.8,
      "n": 2159
    },
    {
      "f0": 98.3,
      "f1": 116.9,
      "db": -9.4,
      "n": 2159
    },
    {
      "f0": 116.9,
      "f1": 135.5,
      "db": -11.6,
      "n": 2159
    },
    {
      "f0": 135.5,
      "f1": 154.1,
      "db": -12.2,
      "n": 2159
    },
    {
      "f0": 154.1,
      "f1": 172.7,
      "db": -16.6,
      "n": 2159
    },
    {
      "f0": 172.7,
      "f1": 191.2,
      "db": -19.7,
      "n": 2159
    },
    {
      "f0": 191.2,
      "f1": 209.8,
      "db": -20.8,
      "n": 2159
    },
    {
      "f0": 209.8,
      "f1": 228.4,
      "db": -22.6,
      "n": 2159
    },
    {
      "f0": 228.4,
      "f1": 247.0,
      "db": -23.6,
      "n": 2159
    },
    {
      "f0": 247.0,
      "f1": 265.6,
      "db": -23.6,
      "n": 2159
    },
    {
      "f0": 265.6,
      "f1": 284.2,
      "db": -23.7,
      "n": 2159
    },
    {
      "f0": 284.2,
      "f1": 302.8,
      "db": -23.6,
      "n": 2159
    },
    {
      "f0": 302.8,
      "f1": 321.3,
      "db": -23.6,
      "n": 2159
    },
    {
      "f0": 321.3,
      "f1": 339.9,
      "db": -23.5,
      "n": 2159
    },
    {
      "f0": 339.9,
      "f1": 358.5,
      "db": -23.6,
      "n": 2159
    },
    {
      "f0": 358.5,
      "f1": 377.1,
      "db": -23.4,
      "n": 2159
    },
    {
      "f0": 377.1,
      "f1": 395.7,
      "db": -23.4,
      "n": 2159
    },
    {
      "f0": 395.7,
      "f1": 414.2,
      "db": -23.5,
      "n": 2159
    },
    {
      "f0": 414.2,
      "f1": 432.8,
      "db": -23.5,
      "n": 2159
    },
    {
      "f0": 432.8,
      "f1": 451.4,
      "db": -23.6,
      "n": 2159
    },
    {
      "f0": 451.4,
      "f1": 470.0,
      "db": -23.6,
      "n": 2159
    }
  ],
  "method": "broadband rtl_power sweep 24-470 MHz (FM, airband, VHF, 315/433 ISM); median dB per band across all sweeps. Power is RELATIVE (uncalibrated dB), not absolute. The spatial map is mean band-power per road cell, k-anonymised and geofenced like the roads."
}