{
  "reference_time_utc": "2014-07-31T13:00:00.000000Z",
  "nominal_event_utc": "2014-07-31T15:56:00Z",
  "event_coordinate": [
    22.6225,
    120.33
  ],
  "counts_waveforms": "demean only",
  "bandpass": {
    "hz": [
      2,
      8
    ],
    "order": 4,
    "phase": "forward-backward zero phase",
    "detrend": "linear",
    "tukey_alpha": 0.1
  },
  "response_removal": {
    "input_pz_unit": "M",
    "output": "HH velocity; HL acceleration",
    "prefilter_hz": [
      0.1,
      0.2,
      25,
      40
    ],
    "water_level_db": 60,
    "sensitivity_removed_separately": false,
    "rationale": "SAC CONSTANT already includes sensitivity"
  },
  "spectrogram": {
    "window": "Hann",
    "duration_s": 2,
    "overlap_fraction": 0.75,
    "nfft": 512,
    "scaling": "density",
    "units": "dB re 1 count^2/Hz"
  },
  "highpass_candidate": {
    "hz": 0.5,
    "order": 4,
    "phase": "forward-backward zero phase",
    "detrend": "linear",
    "tukey_alpha": 0.1,
    "author_parameters_known": false
  },
  "linear_psd_candidate": {
    "input": "0.5 Hz highpass candidate",
    "window_s": 2,
    "overlap_fraction": 0.75,
    "nfft": 512,
    "color_limits": "zero to actual peak in displayed window",
    "units": "count^2/Hz",
    "author_parameters_known": false
  },
  "versions": {
    "python": "3.12.14",
    "obspy": "1.5.1",
    "numpy": "2.5.3",
    "scipy": "1.18.1",
    "matplotlib": "3.11.2"
  }
}