Table 6—
Spatial Decay of Effects of Subway Openings in High AOD Cities
| (1) | (2) | (3) | (4) | (5) | (6) | |
|---|---|---|---|---|---|---|
|
| ||||||
| Post | −0.0270 (0.0147) | −0.0284 (0.0130) | −0.0219 (0.0141) | −0.0272 (0.0110) | −0.0137 (0.0151) | −0.0172 (0.0111) |
| Satellite | Y | Y | Y | Y | Y | Y |
| Cont. × year | Y | Y | Y | Y | Y | Y |
| City × cal. mo. | Y | Y | Y | Y | Y | Y |
| Climate × cont. | Y | Y | Y | Y | Y | Y |
| Mean AOD | 0.66 | 0.43 | 0.64 | 0.40 | 0.59 | 0.38 |
| Bootstrap p-value | 0.083 | 0.049 | 0.136 | 0.026 | 0.364 | 0.143 |
| R 2 | 0.66 | 0.75 | 0.73 | 0.81 | 0.73 | 0.81 |
| Number of events | 29 | 29 | 29 | 29 | 29 | 29 |
| Number of cities | 29 | 490 | 29 | 490 | 29 | 490 |
| Observations | 10,896 | 183,548 | 10,896 | 183,446 | 10,893 | 183,427 |
Notes: Dependent variable is mean AOD. Columns 1 and 2 replicate columns 5 and 6 from Table 4 for reference. Dependent variable in columns 3 and 4 is AOD in a donut 10–25km from the city center. Columns 5 and 6 use AOD in a donut 25–50km from the city center. All specifications control for city fixed effects, city-specific pre-window indicators, city-specific post-window indicators, and city-specific period-0 indicators. Climate controls are pixel count and linear and quadratic terms in temperature, precipitation, cloud cover, vapor pressure, and frost days. Standard errors clustered at the city level are in parentheses.