Research Article
Source Contributions of PM2.5 in the Severe Haze Episode in Hebei Cities
Figure 2
The source contributions ranges by spatial source to PM2.5 concentrations in 11 cities of Hebei (SHB: southern Hebei; NHB: northern Hebei; BJTJ: Beijing and Tianjin; SX: Shanxi; SD: Shandong; HN: Henan).