{
  "fields": [{"id":"_id","type":"int"},{"id":"Consumo de hierro","type":"text"},{"id":"año","type":"numeric"},{"id":"valor","type":"numeric"}],
  "records": [
    [1,"1 a 4 meses",2013,37.2],
    [2,"5 a 8 meses",2013,29.9],
    [3,"9 meses o más",2013,32.9]
]}