Table 1.

Decay as function of environmental conditions. Mean decay constants and decay rates are shown for each combination of environmental conditions evaluated. Values are presented as arithmetic mean ± one standard deviation. *Denotes data reported in Schuit, Ratnesar-Shumate, et al. (2020).

Integrated UVB Irradiance (W/m2)	Temp (°C)	Relative Humidity (%)	Absolute Humidity (g-H2O/m3-air)	kinfectivity (min−1)	Decay Rate (% loss /min)	Predicted Decay Rate from RH Model (% loss /min)	n
0	10	20	1.8	−0.011 ± 0.005	−1.0 ± 0.5	−1.7	4
		70	6.6	0.018 ± 0.012	1.7 ± 1.2	2.1	3
	20	20	3.4	0.006 ± 0.006	0.6 ± 0.6	− 0.3	3
		70	12.0	0.017 ± 0.006	1.5 ± 0.5	3.4	3
	30	20	6.0	− 0.003 ± 0.009	− 0.4 ± 0.9	1.0	4
		70	21.1	0.066 ± 0.028	6.3 ± 2.6	4.7	4
	40	20	10.2	0.040 ± 0.004	3.9 ± 0.4	2.3	4
0.9	10	45	4.2	0.118 ± 0.052	11.1 ± 4.6	10.7	4
	20	45	7.7	0.121 ± 0.017*	11.4 ± 1.5*	14.0	3
	30	45	13.5	0.200 ± 0.076	18.0 ± 6.2	17.1	6
1.9	10	20	1.8	0.211 ± 0.059	18.9 ± 4.8	19.6	4
		70	6.6	0.261 ± 0.132	22.4 ± 10.4	22.6	5
	20	20	3.4	0.234 ± 0.053*	20.8 ± 4.2*	24.5	4
		70	12.0	0.369 ± 0.118	30.5 ± 7.9	27.3	8
	30	20	6.0	0.375 ± 0.076	31.1 ± 5.1	29.1	6
		70	21.1	0.316 ± 0.181	26.2 ± 12.5	31.7	5
	40	20	10.2	0.488 ± 0.146	38.1 ± 8.9	33.4	4