{
  "fields": [{"id":"_id","type":"int"},{"id":"year","type":"numeric"},{"id":"month","type":"numeric"},{"id":"country_from","type":"text"},{"id":"city_to","type":"text"},{"id":"count","type":"numeric"}],
  "records": [
    [1,2018,1,"Vietnam","Busan",31],
    [2,2018,2,"Vietnam","Busan",11],
    [3,2018,3,"Vietnam","Busan",46],
    [4,2018,4,"Vietnam","Busan",32],
    [5,2018,5,"Vietnam","Busan",47],
    [6,2018,6,"Vietnam","Busan",77],
    [7,2018,7,"Vietnam","Busan",22],
    [8,2018,8,"Vietnam","Busan",99],
    [9,2018,9,"Vietnam","Busan",107],
    [10,2018,10,"Vietnam","Busan",13],
    [11,2018,11,"Vietnam","Busan",48],
    [12,2018,12,"Vietnam","Busan",51]
]}