Extended Data Fig. 2: Correlation of OOMs measured by nitrate- and iodide- CIMS (A-F), C5-10 CHO OOMs with different number of oxygen (G) C5-10 CHO OOMs and (H) C5-10 CHON OOMs in Beijing.
From: Secondary organic aerosol formed by condensing anthropogenic vapours over China’s megacities

Time period of data is from 1st to 28th January 2020. The numbers in the brackets are the corresponding number of common species that can be detected by both instruments. R denotes the person correlation coefficient.