(3) P*w was calculated using the following equation from Murphy and Koop: 34 To align with these observations, we focus on CH2O values of 15 ppmv in our analysis. 277.0 K c 0.1 g Lodgepole pine BBOA generated from flaming DeRieux et al. 266.0 K d 0.1 g a Glass transition temperature determined from volatility measurements.