{
  "fields": [{"type":"int","id":"_id"},{"type":"numeric","id":"Anno"},{"type":"numeric","id":"Disponibilita' vetture tram per 100mila ab"}],
  "records": [
    [1,2013,31.5],
    [2,2014,29.8],
    [3,2015,31.4],
    [4,2016,30.2],
    [5,2017,29.9],
    [6,2018,30.3]
]}