Table 3.

Pulmonary function measures of the study subjects during and post-exposure in transport hub and park

Time points	FEV1 (L)				PEF (L/min)
	Transport hub		Park		Transport hub		Park
	N	Mean ± SD	N	Mean ± SD	N	Mean ± SD	N	Mean ± SD
Pre-exposure	40	3.16 ± 0.68	40	3.13 ± 0.64	40	451.03 ± 130.55	40	448.55 ± 120.49
During exposure 1 h	40	3.05 ± 0.64	40	3.12 ± 0.64	40	430.68 ± 126.26	40	439.98 ± 120.82
During exposure 2 h	40	3.02 ± 0.65	40	3.08 ± 0.65	40	427.15 ± 127.27	40	437.76 ± 122.20
Post-exposure 5 h	39	3.10 ± 0.61	40	3.09 ± 0.62	39	438.78 ± 121.29	40	440.57 ± 120.33
Post-exposure 7 h	38	3.09 ± 0.65	40	3.10 ± 0.64	38	443.68 ± 119.36	40	447.65 ± 125.15
Post-exposure 9 h	38	3.12 ± 0.65	40	3.09 ± 0.67	38	437.39 ± 116.07	40	439.50 ± 120.93
Post-exposure 22 h	38	3.09 ± 0.63	40	3.11 ± 0.68	38	436.42 ± 120.24	40	438.32 ± 124.40

SD standard deviation