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. 2022 Sep 24;9(1):335. doi: 10.1057/s41599-022-01353-8

Fig. 3. Activity density (Da) changes of a census tract in Harris County compared to its baseline period during the winter storm.

Fig. 3

The census tract experienced an almost 50% decrease in population activity on February 15, 2021, when the winter storm reached, and recovered to the normal states with a few fluctuations about February 22, 2021.