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Long term (December 2017–February 2021, May 2021 in Manhattan only) data record of TCNO2 (in DU) measured by Pandoras in (a) Upper West Side Manhattan (blue circles), (b) Queens (yellow circles), (c) New Brunswick NJ (green circles) and (d) New Haven CT (pink circles). Total column TROPOMI overpass data at locations of the Pandora instruments is also shown (red circles). No data averaging was performed on Pandora or TROPOMI values.
