[
  {
    "eccharts_layer": "composition_no2_surface",
    "styles": [
      "sh_all_no2_surface"
    ],
    "match": [
      {
        "levelist": [
          "60"
        ],
        "levtype": "ml",
        "paramId": "210121",
        "shortName": "no2"
      },
      {
        "level": [
          "60"
        ],
        "long_name": "Nitrogen dioxide"
      }
    ]
  }
]