Table 4.
Testing differences between PM2.5 and space types group means in good level

Classification PM2.5
N. ave. Sth. deviation F p Scheffe
Space type A 394 8.5 2.1 53.606 0.000*** D, E <A, B, C
B 389 8.2 2.1
C 385 8.1 2.5
D 378 7.0 2.0
E 400 6.8 1.6
*p<.05, **p<.01, ***p<.001.