Fig. 4: The evolution of O3 in Beijing and Hyytiälä.
From: Understanding atmospheric processes: insights from the comparison between Beijing and Hyytiälä
a Shows the hourly mean time series of O3 concentrations in Beijing (red) and Hyytiälä (blue). b Shows the diurnal variations of O3 concentrations in Beijing (red) and Hyytiälä (blue), respectively. The shaded areas are 75/25 percentiles. The ratios of O3 concentration between Beijing and Hyytiälä (line with black circles) are also shown. Hourly mean datasets from 2018 to 2022 were used.
