National manual operation monitoring data of fine particulate matter
The Environmental Protection Administration publishes the national manual operation monitoring data of fine particulate matter (PM2.5). The manual operation monitoring of PM2.5 is the measured value obtained by continuous sampling for 24 hours according to the standard detection method. Since monitoring data requires field sampling, laboratory testing and analysis, and data quality assurance as well as quality control procedures, it usually takes 20 days to yield data.

