Table 11.

Heterogeneity estimation results

(1)(2)(3)
VariablesLow-intensity areas (SO2)Medium-intensity areas (SO2)High-intensity areas (SO2)
GPP−0.0849 (0.0552)−0.1243*** (0.0456)−0.0730* (0.0442)
Constant7.5278*** (1.0647)15.4552*** (1.8031)12.7101*** (2.0026)
Observations71,32670,70471,496
Adjusted R20.78590.76250.7930
ControlsYesYesYes
Year FEYesYesYes
Firm FEYesYesYes
Notes:

*, **and ***, respectively, indicate that the significance is 10, 5 and 1%; the values in brackets are robust standard errors for clustering to industry-year

Source: Authors’ own work

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