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\begin{longtable}{>{\raggedright}p{0.21\textwidth}>{\centering}p{0.16\textwidth}>{\centering}p{0.16\textwidth}>{\centering}p{0.16\textwidth}p{0.16\textwidth}}
   \endfirsthead 
   \hline
   \hline
%   Country & Capital & Continent\\\hline
   \endhead
   \captionsetup{justification=raggedright,singlelinecheck=false}
   \caption{Neighbor response with changes in radius cutoff}\label{REGRAD} \\
   % \tabularnewline
    \midrule \midrule
   Dependent Variable: & \multicolumn{4}{c}{AF}\\
                           & \textbf{One-Quarter Mile}  & \textbf{One-Half Mile}  & \textbf{One Mile}  & \textbf{Two Miles} \\    
   Model:                  & (1)                               & (2)                     & (3)                & (4)\\  
   \midrule
   \emph{Variables} & & & & \\
   Year $=$ -12            & -3.662                      & 4.022                 & 4.158              &   \\   
   & (4.846)                     & (7.607)               & (4.559)            &   \\   
Year $=$ -11            & 11.81$^{**}$                & 21.13$^{***}$         & 11.38$^{***}$      & -8.510\\   
   & (4.059)                     & (4.051)               & (3.283)            & (5.855)\\   
Year $=$ -10            & 3.620                       & 10.61$^{**}$          & 2.824              & -19.84\\   
   & (5.905)                     & (3.994)               & (4.242)            & (12.84)\\   
Year $=$ -9             & -0.3975                     & 9.114$^{*}$           & 9.464$^{**}$       & 32.56$^{**}$\\   
   & (6.802)                     & (4.270)               & (4.307)            & (12.35)\\   
Year $=$ -8             & 6.122                       & 8.025$^{*}$           & -5.635             & 18.01\\   
   & (5.372)                     & (4.017)               & (4.751)            & (15.49)\\   
Year $=$ -7             & -0.6433                     & 4.332$^{*}$           & -0.0490            & 28.65$^{***}$\\   
   & (2.946)                     & (2.137)               & (2.309)            & (4.396)\\   
Year $=$ -6             & -0.6307                     & 0.5265                & -1.245             & 19.88$^{*}$\\   
   & (2.661)                     & (1.831)               & (2.250)            & (9.392)\\   
Year $=$ -5             & -2.513                      & 3.507$^{**}$          & 4.726$^{**}$       & 60.97$^{***}$\\   
   & (2.327)                     & (1.385)               & (2.163)            & (16.01)\\   
Year $=$ -4             & -1.223                      & 2.248                 & 3.205              & 29.33$^{*}$\\   
   & (1.815)                     & (1.374)               & (2.105)            & (14.96)\\   
Year $=$ -3             & -2.271                      & 2.150$^{*}$           & -0.3262            & -20.77$^{**}$\\   
   & (1.491)                     & (1.063)               & (1.832)            & (7.205)\\   
Year $=$ -2             & -2.238$^{*}$                & 1.347                 & 1.895              & -20.43$^{**}$\\   
   & (1.231)                     & (0.7693)              & (1.627)            & (6.959)\\   
Year $=$ 0              & 0.3256                      & -2.040$^{**}$         & -0.3629            & 6.583$^{*}$\\   
   & (1.149)                     & (0.7153)              & (0.9964)           & (3.186)\\   
Year $=$ 1              & 0.0610                      & -3.153$^{***}$        & -2.008             & 22.02\\   
   & (1.285)                     & (1.021)               & (1.603)            & (14.07)\\   
Year $=$ 2              & -3.699$^{**}$               & -4.441$^{***}$        & 1.670              & 11.34\\   
   & (1.621)                     & (1.238)               & (1.862)            & (14.72)\\   
Year $=$ 3              & -1.135                      & -3.191$^{**}$         & 3.513              & 20.60$^{***}$\\   
   & (1.374)                     & (1.155)               & (2.037)            & (6.162)\\   
Year $=$ 4              & 0.2532                      & -3.818$^{**}$         & 5.430$^{**}$       & 13.63$^{*}$\\   
   & (1.695)                     & (1.531)               & (2.219)            & (6.771)\\   
Year $=$ 5              & 1.730                       & -1.271                & -0.3170            & 43.53$^{**}$\\   
   & (1.922)                     & (1.362)               & (2.078)            & (15.40)\\   
Year $=$ 6              & 2.777                       & -0.7069               & 1.592              & 3.543\\   
   & (2.545)                     & (1.767)               & (2.490)            & (6.994)\\   
Year $=$ 7              & 5.904$^{*}$                 & -2.999                & -7.270$^{**}$      & -2.339\\   
   & (2.982)                     & (1.917)               & (2.762)            & (5.597)\\   
\midrule
\emph{Fixed Effects} & & & & \\
Subdistrict-Year        & $\checkmark$                & $\checkmark$          & $\checkmark$       & $\checkmark$\\   
Ditch-Year              & $\checkmark$                & $\checkmark$          & $\checkmark$       & $\checkmark$\\   
In Fallow Program       & $\checkmark$                & $\checkmark$          & $\checkmark$       & $\checkmark$\\   
In CREP After & & & & \\
Treatment               & $\checkmark$                & $\checkmark$          & $\checkmark$       & $\checkmark$\\   
Well                    & $\checkmark$                & $\checkmark$          & $\checkmark$       & $\checkmark$\\   
In CREP-Year            & $\checkmark$                & $\checkmark$          & $\checkmark$       & $\checkmark$\\   
\midrule
\emph{Fit statistics} & & & & \\
Observations            & 49,439                      & 49,439                & 49,439             & 49,439\\  
R$^2$                   & 0.74701                     & 0.74705               & 0.74722            & 0.74768\\  
Within R$^2$            & 0.00158                     & 0.00174               & 0.00238            & 0.00420\\  
\midrule \midrule
\multicolumn{5}{l}{\emph{Clustered (Well \& Year) standard errors in parentheses}}\\
\multicolumn{5}{l}{\emph{Signif. Codes: ***: 0.01, **: 0.05, *: 0.1}}\\

\multicolumn{5}{l}{\emph{Note:} a) All wells within the given radius are included, so the two-mile cutoff includes} \\
\multicolumn{5}{l}{\hspace{1.46cm}  all quarter-mile wells.} \\

\multicolumn{5}{l}{\hspace{1.0cm} b) Each of the 10 largest ditches are included in the Ditch-Year fixed effect.} \\

\multicolumn{5}{l}{\hspace{1.0cm} c) Subdistricts Two through Six included in the Subdistrict-Year fixed effect.} \\

\end{longtable}

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