{
  "fields": [{"id":"_id","type":"int"},{"id":"Tramo de Edad","type":"text"},{"id":"año","type":"numeric"},{"id":"valor","type":"numeric"}],
  "records": [
    [1,"De 0 a 2 años",2013,5.4],
    [2,"De 2 a 4 años",2013,4.1]
]}