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\begin{document}
\begin{tabular}{lcccc}
 Model & 
 scale & 
 {\large$\frac{\sigma(2.76\mathrm{\,Te\kern -0.1em V}\xspace)}{\sigma(5.02\mathrm{\,Te\kern -0.1em V}\xspace)}$}  &
 {\large$\frac{\sigma(7\mathrm{\,Te\kern -0.1em V}\xspace)}{\sigma(5.02\mathrm{\,Te\kern -0.1em V}\xspace)}$}    &
 {\large$\frac{\sigma(8\mathrm{\,Te\kern -0.1em V}\xspace)}{\sigma(5.02\mathrm{\,Te\kern -0.1em V}\xspace)}$}  \\[2mm]
\hline\\[-3mm] 
FONLL       & (min)     & 0.515 & 1.375 &  1.553  \\  
FONLL       & (nominal) & 0.493 & 1.419 &  1.625  \\
FONLL       & (max)     & 0.495 & 1.417 &  1.620  \\
CEM CTEQ6L  & $2 m_b$   & 0.474 & 1.443 &  1.659  \\
CEM CTEQ6L  & $m_b$     & 0.517 & 1.376 &  1.553  \\
CEM CTEQ6L  & $m_b/2$   & 0.591 & 1.280 &  1.404  \\
CEM MRST01L & $2 m_b$   & 0.506 & 1.409 &  1.607  \\
CEM MRST01L & $m_b$     & 0.555 & 1.346 &  1.510  \\
CEM MRST01L & $2m_b$    & 0.640 & 1.257 &  1.373  \\
CEM CTEQ5L  & $2 m_b$   & 0.465 & 1.473 &  1.711  \\
CEM CTEQ5L  & $m_b$     & 0.503 & 1.415 &  1.617  \\
CEM CTEQ5L  & $m_b/2$   & 0.561 & 1.337 &  1.496  \\
CEM MRST98L & $2 m_b$   & 0.500 & 1.433 &  1.649  \\
CEM MRST98L & $m_b$     & 0.542 & 1.375 &  1.556  \\
CEM MRST98L & $m_b/2$   & 0.609 & 1.292 &  1.427  \\
CEM GRV     & $2 m_b$   & 0.474 & 1.470 &  1.708  \\
CEM GRV     & $m_b$     & 0.508 & 1.421 &  1.629  \\
CEM GRV     & $m_b/2$   & 0.558 & 1.358 &  1.530  \\
\end{tabular}
\end{document}
