Figure 1
From: Association between PM10 and specific circulatory system diseases in China
Locations of the three hospitals, the local Meteorological Bureau, and the seven pollutant observatories in the study area (R version 3.6.2 (2019-12-12) https://mirrors.tuna.tsinghua.edu.cn/CRAN/bin/windows/base/old/3.6.2/).
