Table 1.

Regression coefficients for ice nucleating particles and secondary organic aerosol (SOA) concentrations.

SOA component	SOA concentration		Mass fraction
	R2 (R2 outlier omitted)	p value (p value outlier omitted)	R2 (R2 outlier omitted)	p value (p value outlier omitted)
Isoprene
2-MT	0.88 (0.62)	5.4 × 10–5 (1.2 × 10–2)	0.89 (0.83)	4.5 × 10–5 (5.9 × 10–4)
2-MT OS	0.88 (0.56)	7.0 × 10–5 (2.1 × 10–2)	0.87 (0.88)	9.6 × 10–5 (2.1 × 10–4)
2-MG OS	0.92 (0.73)	1.1 × 10–5 (3.6 × 10–3)	0.86 (0.79)	1.3 × 10–4 (1.3 × 10–3)
OS 211	0.91 (0.72)	1.5 × 10–5 (4.1 × 10–3)	0.89 (0.91)	3.7 × 10–5 (7.7 × 10–5)
OS 213	0.88 (0.56)	5.9 × 10–5 (2.0 × 10–2)	0.85 (0.86)	1.2 × 10–4 (4.3 × 10–4)
α‐pinene
Terebic acid	0.64 (0.20)	5.6 × 10–3 (2.2 × 10–1)	0.81 (0.30)	3.9 × 10–4 (1.3 × 10–1)
Anthropogenic
4-NP	0.12 (0.03)	3.3 × 10–1 (6.5 × 10–1)	0.85 (0.49)	1.3 × 10–4 (3.5 × 10–2)
4-NN	0.00 (0.05)	8.7 × 10–1 (5.8 × 10–1)	0.21 (0.09)	1.8 × 10–1 (4.2 × 10–1)