[
  {
    "eccharts_layer": "z500_spread",
    "prefered_units": "dam",
    "styles": [
      "sh_blu_f02t50",
      "sh_range_f02t50"
    ],
    "match": [
      {
        "levelist": [
          "500"
        ],
        "paramId": "129",
        "shortName": "z",
        "type": "es"
      }
    ]
  }
]
