asset_tag__String,fan_time__RecordTime_2006-01-02,fan_val__String_F_YMD
ABCD,2019-01-02,70%
ABCD,2019-01-03,20%
ABCD,2019-01-04,30%
BEDF,2019-01-02,70%
BEDF,2019-01-05,90%
BEDF,2019-01-08,10%
BEDF,2019-01-08,20%
ABCD,2019-01-30,40%