ການພະຍາກອນຄຸນນະພາບອາກາດ
ຂໍ້ມູນຄຸນນະພາບອາກາດສະໜອງໃຫ້ໂດຍ: the Colorado Department of Environmental Protection (colorado.gov)
Note that the measurements for O3 (ozone), CO (carbon monoxide), NO2 (nitrogen dioxide) and SO2 (sulfur dioxide) are taken from the station: CAMP, Colorado