Table 1 Significant differences of PM2.5 levels among different seasons in 2013–2017.

From: Spatio-temporal variations and factors of a provincial PM2.5 pollution in eastern China during 2013–2017 by geostatistics

Season

Average (μg.m−3)

Significance

Spring

Summer

Autumn

Winter

Spring

58.2

1.000

Summer

41.6

0.048 *

1.000

Autumn

50.2

0.320

0.282

1.000

Winter

88.7

0.001**

0.000 **

0.000 **

1.000

  1. *means P < 0.05, **means P < 0.01.