Table 4.
Impact of lockdown on air pollution.
| Variables | (1) Ln(AQI) |
(2) Ln(SO2) |
(3) Ln(PM2.5) |
(4) Ln(PM10) |
(5) Ln(NO2) |
(6) Ln(CO) |
(7) Ln(O3) |
|---|---|---|---|---|---|---|---|
| TW*(LnAiri,t) | 0.998*** (1670.617) |
0.995*** (850.868) |
0.998*** (1670.459) |
0.998*** (1670.827) |
0.995*** (855.958) |
0.997*** (1301.862) |
0.997*** (1263.794) |
| Treat_Lock (direct effects) | −0.181*** (−4.324) |
0.017 (0.321) |
−0.222*** (−4.380) |
−0.107** (−2.175) |
−0.205*** (−3.912) |
−0.048 (−1.430) |
−0.004 (−0.103) |
| Mintem | −0.022*** (−14.674) |
−0.049*** (−24.002) |
−0.011*** (−6.100) |
−0.038*** (−21.508) |
−0.021*** (−10.119) |
−0.005*** (−3.673) |
−0.018*** (−15.473) |
| Maxtem | 0.018*** (10.487) |
0.038*** (16.158) |
0.005** (2.152) |
0.037*** (18.375) |
0.027*** (11.720) |
0.002 (1.143) |
0.017*** (12.849) |
| Maxwind | −0.022*** (−18.909) |
−0.007*** (−4.583) |
−0.030*** (−21.241) |
−0.023*** (−17.069) |
−0.011*** (−7.163) |
−0.008*** (−7.751) |
0.006*** (6.528) |
| Maxgust | 0.001 (1.381) |
0.001 (1.437) |
0.002*** (4.233) |
0.000 (−0.338) |
−0.002*** (−3.299) |
0.000 (−0.584) |
0.001*** (3.745) |
| Rain | −0.024*** (−11.020) |
−0.005* (−1.851) |
−0.025*** (−9.583) |
−0.032*** (−12.425) |
−0.011*** (−3.557) |
0.002 (1.152) |
−0.022*** (−12.717) |
| Snow | 0.006 (0.262) |
−0.023 (−0.716) |
0.016 (0.553) |
−0.001 (−0.034) |
0.059* (1.845) |
0.036* (1.794) |
0.009 (0.507) |
| Spatial FE | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
| Week FE | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
| Constants | 0.117*** (2.987) |
−0.320*** (−7.170) |
0.335*** (7.570) |
−0.036 (−0.761) |
−0.219*** (−3.537) |
0.020 (0.660) |
−0.082* (−1.933) |
| Observations | 3962 | 3962 | 3962 | 3962 | 3962 | 3962 | 3962 |
| R-squared | 0.527 | 0.462 | 0.530 | 0.493 | 0.310 | 0.463 | 0.556 |
| log-likelihood | −1074.674 | −2250.585 | −1831.420 | −1651.560 | −2263.506 | −351.280 | −88.022 |