\begin{table}[]
\caption{Rainfall and Economic Growth (First-Stage)}
{
\def\sym#1{\ifmmode^{#1}\else\(^{#1}\)\fi}
\begin{tabular}{@{\extracolsep{2pt}}l*{5}{c}@{}}
\hline\hline
& \multicolumn{5}{c}{Ordinary Least Squares} \\
\cline{2-6}
& (1) & (2) & (3) & (4) & (5) \\
\hline
Growth in rainfall, t & 0.055\sym{***} & 0.053\sym{***} & 0.049\sym{***} & 0.049\sym{***} & 0.053\sym{***} \\
& (0.016) & (0.017) & (0.017) & (0.018) & (0.018) \\
Growth in rainfall, t-1 & 0.034\sym{***} & 0.032\sym{**} & 0.028\sym{**} & 0.028\sym{**} & 0.037\sym{**} \\
& (0.013) & (0.014) & (0.014) & (0.014) & (0.015) \\
Growth in rainfall, t+1 & & & & 0.001 & \\
& & & & (0.019) & \\
Growth in terms of trade, t & & & & & -0.002 \\
& & & & & (0.023) \\
Log(GDP per capita), 1979 & & -0.011 & & & \\
& & (0.007) & & & \\
Democracy (Polity IV), t-1 & & 0.000 & & & \\
& & (0.001) & & & \\
Ethnolinguistic fractionalization & & 0.006 & & & \\
& & (0.044) & & & \\
Religious fractionalization & & 0.045 & & & \\
& & (0.044) & & & \\
Oil-exporting country & & 0.007 & & & \\
& & (0.019) & & & \\
Log(mountainous) & & 0.001 & & & \\
& & (0.005) & & & \\
Log(national population), t-1 & & -0.009 & & & \\
& & (0.009) & & & \\
Country fixed effects & no & no & yes & yes & yes \\
Country-specific time trends & no & yes & yes & yes & yes \\
Root mean square error & 0.07 & 0.07 & 0.07 & 0.07 & 0.06 \\
\hline
Observarions & 743 & 743 & 743 & 743 & 661 \\
R\sym{2} & 0.024 & 0.081 & 0.133 & 0.133 & 0.162 \\
\hline\hline
\multicolumn{6}{l}{\footnotesize Note.�Huber robust standard errors are in parentheses.}\vspace{-.25em} \\
\multicolumn{6}{l}{\footnotesize Regression disturbance terms are clustered at the country level.}\vspace{-.25em} \\
\multicolumn{6}{l}{\footnotesize A country-specific year time trend is included in all specifications (coefficient estimates not reported).}\vspace{-.25em} \\
\multicolumn{6}{l}{\footnotesize * Significantly different from zero at 90 percent confidence.}\vspace{-.25em} \\
\multicolumn{6}{l}{\footnotesize ** Significantly different from zero at 95 percent confidence.}\vspace{-.25em} \\
\multicolumn{6}{l}{\footnotesize *** Significantly different from zero at 99 percent confidence.}
\end{tabular}
}
\end{table}
