the correction code of 12 trade is as below. It is a price correction not volume correction. Even if it is point of time and polygon didn't go...
"-04:00" is EDT or US eastern summer time zone. And it is 1 min bar not daily bar.
Based on https://polygon.io/glossary/conditions-indicators, trade condition P (22, Prior Reference Price) should be used to update high/low price....
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