{
  "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": [
    [1,2019,1,"Vietnam","Busan",25],
    [2,2019,2,"Vietnam","Busan",33],
    [3,2019,3,"Vietnam","Busan",87],
    [4,2019,4,"Vietnam","Busan",62],
    [5,2019,5,"Vietnam","Busan",96],
    [6,2019,6,"Vietnam","Busan",98],
    [7,2019,7,"Vietnam","Busan",124],
    [8,2019,8,"Vietnam","Busan",129],
    [9,2019,9,"Vietnam","Busan",93],
    [10,2019,10,"Vietnam","Busan",64],
    [11,2019,11,"Vietnam","Busan",62],
    [12,2019,12,"Vietnam","Busan",40]
]}