{
  "variable": ["particulate_matter_2.5um"],
  "date": ["2026-10-25/2026-10-25"],
  "time": ["00:00"],
  "leadtime_hour": ["0", "3", "6"],
  "type": ["forecast"],
  "area": [40, 110, 36, 114],
  "data_format": "grib"
}