Table 3.
Double difference results
| Dependent variable: ln(AQI) | (1) | (2) | (3) | (4) | (5) |
|---|---|---|---|---|---|
| ln(Migration)*lockdown | − 0.142*** | − 0.016*** | − 0.025*** | − 0.140*** | − 0.122*** |
| (− 25.988) | (− 2.706) | (− 4.231) | (− 11.840) | (− 9.555) | |
| Temperature | 0.001*** | 0.003*** | 0.002*** | ||
| (19.363) | (59.766) | (35.524) | |||
| Wind_Direction | − 0.042*** | − 0.027*** | − 0.030*** | ||
| (− 5.996) | (− 4.049) | (− 4.460) | |||
| Wind_Speed | − 0.175*** | − 0.109*** | − 0.091*** | ||
| (− 26.486) | (− 16.601) | (− 13.870) | |||
| Precipitation | − 0.037*** | − 0.059*** | − 0.045*** | ||
| (− 32.138) | (− 54.398) | (− 41.181) | |||
| R2 (within) | 0.017 | 0.510 | 0.535 | 0.991 | 0.993 |
| No. of cities | 325 | 325 | 325 | 325 | 325 |
| Observations | 39,967 | 39,967 | 38,452 | 38,452 | 38,452 |
| City FE | No | Yes | Yes | Yes | Yes |
| Date FE | No | Yes | Yes | No | No |
| City by date trend | No | No | No | Yes | Yes |
| ln(Migration) by date trend | No | No | No | No | Yes |
Standard errors are clustered at the city-day level. t statistics are reported below the coefficients in parentheses
***Significant at 1%
**Significant at 5%
*Significant at 10%