|   “抑尘”  |       
  |       
  |       
  |       28.00*** (9.34)  |       −48.00* (28.87)  |       
  |    
|   “治源”  |       
  |       
  |       2.91*** (0.78)  |       −36.67*** (13.55)  |       
  |       
  |    
|   “禁燃”  |       34.56*** (5.65)  |       63.31*** (8.02)  |       4.31** (2.18)  |       159.98*** (25.69)  |       189.82*** (54.79)  |       1.13*** (0.27)  |    
|   “增绿”  |       −0.42* (0.24)  |       −1.39*** (0.32)  |       −0.09 (0.08)  |       −0.10 (0.72)  |       −12.97** (5.38)  |       −0.02* (0.01)  |    
|   时间效应  |       有  |       有  |       有  |       有  |       有  |       有  |    
|   天气效应  |       有  |       有  |       有  |       有  |       有  |       有  |    
|   样本数  |       551  |       551  |       551  |       551  |       551  |       551  |