Fig. 4

Variation of hourly Cupressaceae pollen concentration and meteorological factors (T, RH, WS, RF) at the (a) BTBG, (b) HP, (c) RCEES and (d) MS stations during the pollen season in 2018.

Variation of hourly Cupressaceae pollen concentration and meteorological factors (T, RH, WS, RF) at the (a) BTBG, (b) HP, (c) RCEES and (d) MS stations during the pollen season in 2018.