Fig. 5.

Normalized MS2 recoveries at each sampling time point throughout the control and the two types of photocatalytic tests (PCO1 and PCO2) with the devices active. Each time point represents recovery of MS2 from duplicate bioaerosol samples as determined by plaque assay, and the error bars represent pooled standard deviation from triplicate sample plating of duplicate bioaerosol samples for each sampling time point. Data from each sampling time point are normalized to the initial sample recovery at time = 0 min for each individual test.