Fig. 3: The relative percent change in the SARS-CoV-2 test positivity rate associated with an increase of 10 μg/m3 PM2.5 at lags 0–14 of single-day PM2.5 (left panel); lags 0, 3, 6, 9, and 12 of the three-day average PM2.5 (middle panel); and lags 0, 7, and 14 of the 7-day average PM2.5 (right panel).

Error bars indicate 95% confidence intervals, which were not corrected for multiple testing.