Table 2 Sig. F and F values at different time intervals.

From: Health risk assessment of PM2.5 on walking trips

Time interval

30 s

60 s

120 s

180 s

240 s

300 s

Sig. F

0.009

0.011

0.027

0.062

0.115

0.136

F

126.3

62.1

58.3

52.0

47.5

38.2

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