Finding F-0221

“The average concentration of PM10 during the spring and winter consecutive measurement periods was close, with values of 148.20 and 182.83 μg·m−3 , respectively.”

Yu et al. Outdoor Radon and Its Progeny in Relation to the Particulate Matter during Different Polluted Weather in Beijing. Page 6. CKB 0461

Structure

Factor: Particulate matter (PM₂.₅ and PM₁₀)
Setting: city (ambient), CN (spring (dust storm weather))
Study design: outdoor measurement study in Beijing: radon and progeny (ERS-RDM-2S monitor), PM2.5, PM10 and meteorology recorded during a spring dust-storm period and a winter haze period (class 4)
Effect: mean 148.20
Averaging time: measurement-period mean

A Finding records what one published document states, verbatim and with its page. It is not a conclusion of Coridum; see the Claims that build on it.