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The graph below show up-to-date time series of the difference between TROPOMI and PGN/Pandora total NO2 column data. Vertical markers (black solid, dashed, and dotted lines) indicate major events, respectively: the TROPOMI processor switch from version 1.2.2 to 1.3.0 in March 2019, the activation of the finer horizontal resolution of TROPOMI in August 2019, and the switch to processor version 1.4.0 in December 2020. (© Update April 6, 2021, of Verhoelst et al., AMT 2021). Stations are ordered by median total column.

NO2 total mozaic