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. 2007 Mar 31;4(1):39–44. doi: 10.3390/ijerph2007010007

Table 5:

NO2 and CO levels in different micro-environments

NO2(ppb) CO (ppm)

Kitchen Outdoors Kitchen Outdoors
Mean 31.8 6.8 15 ND
SD 35.2 12.7 13 N/A
Min 2.0 0.6 ND ND
Max 206.0 58.7 38 ND

ND and N/A means not detected and not applicable respectively.