{
  "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": [
    [1,2021,1,"Vietnam","Busan",76],
    [2,2021,2,"Vietnam","Busan",61],
    [3,2021,3,"Vietnam","Busan",44],
    [4,2021,4,"Vietnam","Busan",63],
    [5,2021,5,"Vietnam","Busan",56],
    [6,2021,6,"Vietnam","Busan",83],
    [7,2021,7,"Vietnam","Busan",79],
    [8,2021,8,"Vietnam","Busan",67],
    [9,2021,9,"Vietnam","Busan",83],
    [10,2021,10,"Vietnam","Busan",80],
    [11,2021,11,"Vietnam","Busan",105],
    [12,2021,12,"Vietnam","Busan",53]
]}