Fig. 3: Box plots of trace gases (NO2, O3), aerosol compositions of NO3-and Chl, meteorological parameter (RH), surface area density (Sa) and ToF-CIMS species (N2O5, ClNO2) at nighttime during the entire study, P1 and P2, respectively.

The circles, horizontal lines, lower and upper box edges, lower and upper whiskers refer to mean, median, 25th and 75th percentiles, 10th and 90th percentiles in the box, respectively.