\begin{tabular}{l*{4}{c}} 
\\[-1.8ex]\hline \hline \\[-1.8ex] 
& \multicolumn{2}{c}{1st Stage} 
& \multicolumn{2}{c}{Fuzzy RD (IV)}
 \\ \midrule
                    &\multicolumn{1}{c}{Road}&\multicolumn{1}{c}{Fires}&\multicolumn{1}{c}{Fires}&\multicolumn{1}{c}{PM 2.5}\\
\midrule
Above threshold     &       0.230\sym{***}&       0.411\sym{**} &                     &                     \\
                    &     (0.017)         &     (0.178)         &                     &                     \\
Road built          &                     &                     &       1.590\sym{**} &       0.463\sym{**} \\
                    &                     &                     &     (0.667)         &     (0.199)         \\
\midrule
Observations        &      133812         &      133788         &      133788         &      133788         \\
Control group mean  &                     &                     &        2.77         &       42.59         \\
\hline \hline \\[-1.8ex] 
\multicolumn{5}{p{\linewidth}}{\small 
\noindent \textit{Note}: All models 
include baseline controls, 
district-threshold and year FE, and 
triangular kernel weights. Std.\ errors 
clustered at village level. 
* p$<$0.10, ** p$<$0.05, 
*** p$<$0.01.} 
\end{tabular}
