Table 4.

Relationship between the levels of log-transformed airborne microorganism and quantitative variables.

Airborne microorganism level, CFU/m3	Relative humidity, %				Temperature, °C				Number of people present				CO2, ppm
	β	SE	Model p	R2	β	SE	Model p	R2	β	SE	Model p	R2	β	SE	Model p	R2
Bacteria	NS	NS	NS	0.01	0.18	0.038	0.0001	0.23	0.01	0.001	<0.0001	0.37	0.01	0.001	<0.0001	0.37
GNB	0.05	0.04	0.2197	0.02	0.14	0.05	0.0068	0.1	NS	NS	NS	NS	NS	NS	NS	NS
Fungi	0.09	0.034	0.0127	0.08	NS	NS	NS	NS	0.002	0.001	0.056	0.05	0.002	0.001	0.056	0.05

GNB: Gram-negative bacteria; NS = not statistically significant at p = 0.25.