Fig. 1.

Volatility distributions for representative experiments with similar $\alpha$-pinene ozonolysis rate: 25 °C (A), 5 °C (B), and $-$25 °C (C). The green and blue bars show summed molecular ions observed in the nitrate-CI and PTR3, respectively. The highest and lowest bin are overflow bins. Volatility bins are defined at 300 K, shifted, and widened according to their corresponding temperature. The resulting saturation mass concentration is defined on the x axis, while ${\log }_{10}{C}_{\mathrm{300}\mathrm{K}}^{*}$ is specified by white numbers. Additionally, the bins in supersaturation with $C^v/C*>1$ are found left of the indicating arrow. ELVOC, extremely low-volatility organic compound; IVOC, intermediate-volatility organic compound; LVOC, low-volatility organic compound; SVOC, semi-volatile organic compound.