[
  {
    "eccharts_layer": "composition_co700",
    "styles": [
      "sh_all_co_upper",
      "sh_YlGnBu_co_upper"
    ],
    "match": [
      {
        "levelist": [
          "700"
        ],
        "paramId": "210123",
        "shortName": "co"
      },
      {
        "level": [
          "700"
        ],
        "long_name": "Carbon monoxide"
      }
    ]
  }
]