{
  "schema": "westlake-observations-v1",
  "source": "纯教学格式示例，不是真实运行数据",
  "vertical_datum": "教学示意基准",
  "records": [
    {
      "station_id": "DEMO_ONLY",
      "observed_at": "2026-11-01T08:00:00+08:00",
      "water_level_m": 7.18,
      "rainfall_mm": 0,
      "rain_period_min": 60,
      "inflow_m3s": null,
      "outflow_m3s": null,
      "gate_opening_m": null,
      "downstream_level_m": null,
      "quality_flag": "example"
    },
    {
      "station_id": "DEMO_ONLY",
      "observed_at": "2026-11-01T09:00:00+08:00",
      "water_level_m": null,
      "rainfall_mm": null,
      "rain_period_min": null,
      "inflow_m3s": 0,
      "outflow_m3s": 0,
      "gate_opening_m": 0,
      "downstream_level_m": null,
      "quality_flag": "example"
    }
  ]
}