{
  "fields": [{"id":"_id","type":"int"},{"id":"Promedio","type":"text"},{"id":"año","type":"numeric"},{"id":"valor","type":"numeric"}],
  "records": [
    [1,"0 a 6",2013,15.8],
    [2,"7 a 9",2013,34.5],
    [3,"10 a 12",2013,26.3],
    [4,"12 a 15",2013,13.2],
    [5,"16 y más",2013,10.7]
]}