table | _time                | state
====================================
    0 | 2020-02-22T16:00:00Z | CA   
    1 | 2020-02-22T17:00:00Z | CA   
    2 | 2020-02-22T18:00:00Z | CA   
    2 | 2020-02-22T18:00:00Z | WA   
