Table 2.
The effect of within-city migration on air quality
| (1) | (2) | (3) | (4) | (5) | (6) | |
|---|---|---|---|---|---|---|
| Dependent variables: | ln(AQI) | ln(SO2) | ln(PM2.5) | ln(PM10) | ln(NO2) | ln(CO) |
| ln(Migration) | 0.229*** | 0.163*** | 0.187*** | 0.342*** | 0.694*** | 0.109*** |
| (39.654) | (31.970) | (26.365) | (49.469) | (132.760) | (26.758) | |
| Temperature | 0.003*** | 0.001*** | 0.004*** | 0.003*** | 0.002*** | 0.002*** |
| (52.085) | (25.037) | (70.671) | (48.010) | (48.155) | (63.392) | |
| Wind_Direction | − 0.027*** | − 0.047*** | − 0.080*** | − 0.022*** | − 0.035*** | − 0.042*** |
| (− 4.025) | (− 8.053) | (− 9.782) | (− 2.805) | (− 5.808) | (− 9.005) | |
| Wind_Speed | − 0.114*** | − 0.141*** | − 0.257*** | − 0.079*** | − 0.312*** | − 0.117*** |
| (− 17.605) | (− 24.664) | (− 32.269) | (− 10.201) | (− 53.238) | (− 25.605) | |
| Precipitation | − 0.055*** | − 0.041*** | − 0.060*** | − 0.074*** | − 0.026*** | − 0.009*** |
| (− 51.482) | (− 43.510) | (− 45.951) | (− 58.189) | (− 27.213) | (− 11.969) | |
| R2 (within) | 0.992 | 0.980 | 0.984 | 0.988 | 0.988 | 0.753 |
| No. of cities | 325 | 325 | 325 | 325 | 325 | 325 |
| Observations | 38,452 | 38,452 | 38,452 | 38,452 | 38,452 | 38,452 |
| City FE | Yes | Yes | Yes | Yes | Yes | Yes |
| City by date trend | Yes | Yes | Yes | Yes | Yes | Yes |