@data{10.12072/ncdc.SDZRAW.db0004.2021,
title = {Carbon monoxide daily data set of  Beijing Shangdianzi atmosphere  watch station 2018},
author = {Zhou Liyan and Qiu Yulu},
url = {http://www.ncdc.ac.cn/portal/metadata/cb18e9e6-98dc-4cde-919a-d4aec2add800},
cstr = {11738.11.ncdc.SDZRAW.2020.21},
doi = {10.12072/ncdc.SDZRAW.db0004.2021},
journal = {National Cryosphere Desert Data Center},
publisher = {National Cryosphere Desert Data Center(www.ncdc.ac.cn)}
}