Research on Influential Factors of PM2.5 within the Beijing-Tianjin-Hebei Region in China

Table 6

Influencing factors quantitative analysis results.

	Correlation	Sig. (two-side)
IF1	0.326	0.018	52
IF2	0.143	0.311	52
IF3	0.375	0.006	52
IF4	0.490	0.000	52
IF5	0.172	0.224	52
IF6	0.471	0.000	52
IF7	0.220	0.117	52
IF8	0.164	0.247	52
IF9	0.396	0.004	52
IF10	0.227	0.106	52
IF11	0.275	0.048	52
IF12	0.653	0.000	52
IF13	0.301	0.030	52
IF14	−0.233	0.097	52
IF15	−0.279	0.045	52

means the confidence level of regression coefficient is above 99%; means the confidence level of regression coefficient is above 95%.