Fig. 4: Measured CCl4 concentrations from each industry sector.
From: CCl4 emissions in eastern China during 2021–2022 and exploration of potential new sources
a Spatial distribution of sampling industry sectors with different symbols and colors. b Measured CCl4 concentrations from each industry sector. Box plots indicate the median (middle line), 25th, 75th percentile (box), and 5th and 95th percentile (whiskers) as well as the mean level (asterisks). Solid dots represent the concentration of each sample. MGPM manufacture of general-purpose machinery, MRCM manufacture of raw chemical materials and chemical products, MEMA manufacture of electrical machinery and apparatus, MA manufacture of automobiles, MF manufacture of paper and paper products, MRPP manufacture of rubber and plastics products, MSPM manufacture of special purpose machinery, MT manufacture of textile, PPCF processing of petroleum, coal, and other fuels, MPPP manufacture of paper and paper products, UWR utilization of waste resources, OTHE others.
