Research Article
Emission Reduction Effect and Mechanism of Auto-Purchase Tax Preference
| Variable | Obs | Mean | Std. dev. | Min | Max |
| LnSO2 | 2969 | 10.413 | 1.127 | 0.693 | 13.434 | LnWater | 2973 | 8.401 | 1.132 | 1.946 | 11.421 | LnSoot | 2926 | 9.762 | 1.132 | 3.526 | 15.458 | Time | 3022 | .285 | 0.452 | 0 | 1 | LnGDP | 3022 | 7.112 | 1.051 | 3.502 | 10.402 | LnPop | 3022 | 5.901 | 0.731 | 3.022 | 8.031 | Pollution_Degree | 3022 | 0.487 | 0.111 | 0 | 0.91 | LnUrban | 3022 | 3.936 | 0.197 | 3.453 | 4.495 | LnMile | 3022 | 2.714 | 0.566 | 0.113 | 3.497 | LnIncome | 3022 | 8.6 | 0.356 | 7.825 | 9.665 | LnSale | 54144 | 4.275 | 2.419 | 0 | 11.164 | Price_Grade | 54144 | 3.252 | 1.8 | 1 | 7 | LnOil_Price | 54144 | 4.094 | 0.336 | 3.439 | 4.655 |
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