{
  "basin": "nisqually",
  "gage": "Nisqually nr National 12082500",
  "band": "5.0-15.0Hz",
  "q_peak_utc": "2025-12-10 14:15:00+00:00",
  "ref_levels_m3s": [
    70,
    90,
    110,
    130,
    150,
    170,
    190,
    210,
    230,
    250,
    270,
    290,
    310
  ],
  "method": "matched-discharge crossings, first-rising-limb-referenced; logistic step fit with bootstrap CI; reversibility from sign(\u0394)/R\u00b2",
  "stations": {
    "UW.LON": {
      "b_pooled": 2.85,
      "n_crossings": 276,
      "lag_correction": {
        "lag_min": -180,
        "lag_xcorr_r": 0.9,
        "station_gage_km": 20.9,
        "applied": true,
        "implied_celerity_m_s": 1.93
      },
      "persistent_offset_log10": -0.462,
      "direction": null,
      "onset_utc": "2025-12-10 15:20:00+00:00",
      "onset_lag_h": 1.1,
      "step_t50_utc": "2025-12-12 12:33:31.158563387+00:00",
      "step_t50_lag_vs_Qpeak_h": 46.3,
      "step_t50_lag_CI_h": [
        45.3,
        47.0
      ],
      "transition_width_h": 6.0,
      "tau_CI_h": [
        1.5,
        1.5
      ],
      "magnitude_log10": -0.388,
      "magnitude_CI": [
        -0.471,
        -0.309
      ],
      "r2": 0.15,
      "character": "stepwise",
      "reversible": true,
      "supply_shutoff_decline_log10": -0.22,
      "supply_confounded": false
    },
    "CC.GTWY": {
      "b_pooled": 1.66,
      "n_crossings": 118,
      "lag_correction": {
        "lag_min": -105,
        "lag_xcorr_r": 0.88,
        "station_gage_km": 12.8,
        "applied": true,
        "implied_celerity_m_s": 2.03
      },
      "persistent_offset_log10": -0.569,
      "direction": "negative",
      "onset_utc": "2025-12-10 18:05:00+00:00",
      "onset_lag_h": 3.8,
      "step_t50_utc": "2025-12-10 14:15:00.000000684+00:00",
      "step_t50_lag_vs_Qpeak_h": 0.0,
      "step_t50_lag_CI_h": [
        0.0,
        11.1
      ],
      "transition_width_h": 70.2,
      "tau_CI_h": [
        1.5,
        25.9
      ],
      "magnitude_log10": -0.56,
      "magnitude_CI": [
        -0.757,
        -0.337
      ],
      "r2": 0.39,
      "character": "gradual",
      "reversible": false,
      "supply_shutoff_decline_log10": -0.7,
      "supply_confounded": true
    }
  },
  "propagation": {
    "persistent_stations": [
      "CC.GTWY"
    ],
    "order_earliest_first": [
      "CC.GTWY"
    ],
    "pairs": []
  }
}