For the minute level carbon monoxide 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, the hour data is generated through expert level quality control; and then the day data set is synthesized from the hour 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 carbon monoxide data of main air pollution gases.
The te48i carbon monoxide analyzer produced by Thermo Fisher company was used to collect the minute level concentration data of carbon monoxide. The data unit was ppm and the data format was excel (*. XLS).
First, the original data is filtered by singular value, zero span check and other processes to eliminate the problematic observation data. Then the data are corrected according to the calibration curve, 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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CSTR:11738.11.ncdc.SDZRAW.2020.21
10.12072/ncdc.SDZRAW.db0004.2021