股票历史数据中开盘价和最低价有为0的数据，这些如何解读？
如：
‘SZSE.002070′,’SZSE.300622′,’SZSE.300762’ 等
可以发下时间最好带下行情的截图
示例数据(可参见时间点:2019-04-30 09:00:00.000000000): datetime,datetime_nano,SZSE.200418.open,SZSE.200418.high,SZSE.200418.low,SZSE.200418.close,SZSE.200418.volume,SZSE.200418.open_oi,SZSE.200418.close_oi 2019-04-29 14:00:00.000000000,1556517600000000000,51.23,51.28,51.15,51.22,131000,0,0 2019-04-30 09:00:00.000000000,1556586000000000000,0.0,51.88,0.0,51.65,215900,0,0 2019-04-30 10:00:00.000000000,1556589600000000000,51.65,51.8,51.25,51.72,185300,0,0 2019-04-30 11:00:00.000000000,1556593200000000000,51.72,51.98,51.7,51.91,88400,0,0 2019-04-30 13:00:00.000000000,1556600400000000000,51.91,52.31,51.86,52.3,135500,0,0
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示例数据(可参见时间点:2019-04-30 09:00:00.000000000):
datetime,datetime_nano,SZSE.200418.open,SZSE.200418.high,SZSE.200418.low,SZSE.200418.close,SZSE.200418.volume,SZSE.200418.open_oi,SZSE.200418.close_oi
2019-04-29 14:00:00.000000000,1556517600000000000,51.23,51.28,51.15,51.22,131000,0,0
2019-04-30 09:00:00.000000000,1556586000000000000,0.0,51.88,0.0,51.65,215900,0,0
2019-04-30 10:00:00.000000000,1556589600000000000,51.65,51.8,51.25,51.72,185300,0,0
2019-04-30 11:00:00.000000000,1556593200000000000,51.72,51.98,51.7,51.91,88400,0,0
2019-04-30 13:00:00.000000000,1556600400000000000,51.91,52.31,51.86,52.3,135500,0,0