{
  "fields": [{"id":"_id","type":"int"},{"id":"Frecuencia","type":"text"},{"id":"año","type":"numeric"},{"id":"valor","type":"numeric"}],
  "records": [
    [1,"A diario",2008,21.8],
    [2,"Ocasionalmente",2008,8.2],
    [3,"A diario",2013,17],
    [4,"Ocasionalmente",2013,5.8]
]}