{
  "fields": [{"id":"_id","type":"int"},{"id":"Edad","type":"numeric"},{"id":"año","type":"numeric"},{"id":"valor","type":"numeric"}],
  "records": [
    [1,0,2013,21.3],
    [2,1,2013,36.1],
    [3,2,2013,49.9],
    [4,3,2013,62]
]}