Table 1.

Mean bead speeds in water-soluble SOM from α-pinene ozonolysis and corresponding viscosities

Chamber sample	RH, %	Mean bead speed, μm/ms	Viscosity, ± 95% prediction limits, Pa·s
HEC*	90
	80
	70
PNNL†	87
	83
	79
	75
	71

^*HEC refers to samples collected on quartz fiber filters from the Harvard Environmental Chamber.

^†PNNL refers to samples collected on Teflon filters from the Pacific Northwest National Laboratory Continuous-Flow Environmental Chamber.