For the minute level PM2.5 concentration data collected at Shangdianzi station in 2018, the first step is to conduct observer level quality control; secondly, with the support of data quality control software, hourly data is generated through expert level quality control; and then daily data set is synthesized from hourly data. The daily data set includes collection time, device name, data value, datavaluemax, datavaluetmx, datavaluemin, datavaluetmn and other information, which can be used for daily change analysis of PM2.5 data of main air pollutants.
|collect time||2018/01/01 - 2018/12/31|
|altitude||293.1m - 293.5m|
|data size||52.7 kB|
|Data time resolution|
The concentration data of pm2.5min was collected by TEOM 1405df particle analyzer produced by Thermo Fisher company. The data unit was μ g / m ^ 3 and the data format was excel (*. XLS).
First, the original data is filtered by singular value, and the problematic observation data is eliminated. Then the data are corrected according to the quality control algorithm, and the hourly and daily mean values are calculated according to the effective data.
The data quality is good after the quality control of observer level and expert level.
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