Figure 5

The relationships between the temperature and fugacity fraction (ff) for PCB28 in the latitudinal direction from south to north around four cities, (a) Guangzhou, (b) Wuhan, (c) Beijing, and (d) Harbin.

The relationships between the temperature and fugacity fraction (ff) for PCB28 in the latitudinal direction from south to north around four cities, (a) Guangzhou, (b) Wuhan, (c) Beijing, and (d) Harbin.