The results of considering the impact of other policies
| (1) | (2) | (3) | (4) | |
|---|---|---|---|---|
| Variables | SO2 | SO2 | SO2 | SO2 |
| GPP | −0.0989*** (0.0282) | −0.1117** (0.0444) | −0.1006*** (0.0274) | −0.0990** (0.0418) |
| Constant | 11.4862*** (0.8569) | 10.5364*** (0.9615) | 11.0803*** (0.8598) | 10.0791*** (1.0072) |
| Observations | 211,143 | 155,527 | 206,360 | 146,414 |
| Adjusted R2 | 0.7634 | 0.7800 | 0.7606 | 0.7540 |
| Controls | Yes | Yes | Yes | Yes |
| Year FE | Yes | Yes | Yes | Yes |
| Firm FE | Yes | Yes | Yes | Yes |
| (1) | (2) | (3) | (4) | |
|---|---|---|---|---|
| Variables | SO2 | SO2 | SO2 | SO2 |
| GPP | −0.0989 | −0.1117 | −0.1006 | −0.0990 |
| Constant | 11.4862 | 10.5364 | 11.0803 | 10.0791 |
| Observations | 211,143 | 155,527 | 206,360 | 146,414 |
| Adjusted | 0.7634 | 0.7800 | 0.7606 | 0.7540 |
| Controls | Yes | Yes | Yes | Yes |
| Year FE | Yes | Yes | Yes | Yes |
| Firm FE | Yes | Yes | Yes | Yes |
*, **and ***, respectively, indicate that the significance is 10, 5 and 1%; the values in brackets are robust standard errors for clustering to industry-year
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