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. 2023 Feb 23;30(18):51726–51739. doi: 10.1007/s11356-023-25904-x

Table 3.

Correlation matrix analysis

lnEP lnENVTAX lnREN LnACT lnPOP lnUR
lnEP 1
lnENVTAX  − 0.037* 1
lnREN  − 0.212*  − 0.276** 1
lnACT  − 0.844*** 0.244*  − 0.224* 1
lnPOP  − 0.360*** 0.344** 0.010 0.211 1
lnUR 0.874*** 0.141  − 0.326**  − 0.638***  − 0.279** 1

***, **, and * denote the significance at 1%, 5% and 10% level, respectively