Table 1 O3 production sensitivity regimes and the corresponding slope and correlation coefficient (R2) values for the linear regression analysis for O3 versus the normalized HCHO or NO2 under different HCHO/NO2 ratios.
From: Characterization of ozone in the lower troposphere during the 2016 G20 conference in Hangzhou
Regime | HCHO/NO2 | HCHO | NO2 | ||
|---|---|---|---|---|---|
Slope | R2 | Slope | R2 | ||
VOC-limited | <4 | 11 | 0.14 | 6.0 | 0.06 |
<2 | 6.7 | 0.56 | 0.31 | 0.01 | |
2–3 | 42 | 0.50 | 19 | 0.13 | |
3–4 | 8.3 | 0.16 | 4.8 | 0.06 | |
Transition | 4~6 | 25 | 0.79 | 29 | 0.94 |
NOx-limited | >6 | 10 | 0.62 | 19 | 0.71 |
