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. 2016 Oct 13;16(10):1698. doi: 10.3390/s16101698

Table 2.

Measurements at the reference sites.

CairClip Version Site Name Sampling Days Hourly Average (ppb) CairClip Hourly Average (ppb) Reference CairClip/Reference
O3/NO2 LPA 24 38.40 37.53 1 1.02
GOL 30 59.10 51.13 1 1.16
NO2 LPA 24 21.45 5.54 3.87
GOL 30 - 5.10 -

1 Sum of O3 and NO2.