{
  "fields": [{"id":"_id","type":"int"},{"id":"column_name","type":"text"},{"id":"column_type","type":"text"},{"id":"description","type":"text"}],
  "records": [
    [1,"_id","Number","ลำดับรายการ"],
    [2,"year","Number","ปี พ.ศ."],
    [3,"month_no","Number","ลำดับเดือน"],
    [4,"month","String","ชื่อเดือน"],
    [5,"crash","Number","จำนวนรถขัดข้องรวม"]
]}