\begin{tabular}{lrrll}
\toprule
Element &   $T_c (\si{\kelvin})$ &  $\rho_{300 K} (\si{\nano\ohm\meter})$ &                               Source $T_c$ &       Source $\rho_{300 K}$ \\
\midrule
     Nb &  9.2500 &  152.00 &                                 \cite{webb} &  at 273 K \cite{crc} \\
     Tc &  8.2000 &  200.00 &                                 \cite{webb} &       \cite{rhowiki} \\
     Pb &  7.2000 &  213.00 &                                 \cite{webb} &           \cite{crc} \\
     La &  6.0000 &  615.00 &                                 \cite{webb} &           \cite{crc} \\
      V &  5.4000 &  202.00 &                                 \cite{webb} &           \cite{crc} \\
     Ta &  4.4000 &  135.00 &                                 \cite{webb} &           \cite{crc} \\
     Hg &  4.1500 &  961.00 &                                 \cite{webb} &  at 298 K \cite{crc} \\
     Sn &  3.7000 &  115.00 &                                 \cite{webb} &  at 273 K \cite{crc} \\
     In &  3.4000 &   80.00 &                                 \cite{webb} &  at 273 K \cite{crc} \\
     Tl &  2.4000 &  150.00 &                                 \cite{webb} &  at 273 K \cite{crc} \\
     Re &  1.7000 &  172.00 &                                 \cite{webb} &  at 273 K \cite{crc} \\
     Th &  1.4000 &  147.00 &                                 \cite{webb} &  at 273 K \cite{crc} \\
     Pa &  1.4000 &  108.00 &                                 \cite{webb} &           \cite{crc} \\
      U &  1.3000 &  280.00 &                                 \cite{webb} &  at 273 K \cite{crc} \\
     Al &  1.1800 &   27.33 &                                 \cite{webb} &           \cite{crc} \\
     Ga &  1.0800 &  136.00 &                                 \cite{webb} &  at 273 K \cite{crc} \\
     Am &  1.0000 &  689.00 &                                 \cite{webb} &       \cite{rhowiki} \\
     Mo &  0.9200 &   55.20 &                                 \cite{webb} &           \cite{crc} \\
     Zn &  0.8500 &   60.60 &                                 \cite{webb} &           \cite{crc} \\
     Os &  0.7000 &   81.00 &                                 \cite{webb} &  at 273 K \cite{crc} \\
     Zr &  0.6000 &  433.00 &                                 \cite{webb} &           \cite{crc} \\
     Cd &  0.5200 &   68.00 &                                 \cite{webb} &  at 273 K \cite{crc} \\
     Ru &  0.5000 &   71.00 &                                 \cite{webb} &  at 273 K \cite{crc} \\
     Ti &  0.5000 &  390.00 &                                 \cite{webb} &  at 273 K \cite{crc} \\
     Hf &  0.3800 &  340.00 &                                 \cite{webb} &           \cite{crc} \\
     Ir &  0.1000 &   47.00 &                                 \cite{webb} &  at 273 K \cite{crc} \\
     Lu &  0.1000 &  582.00 &                                 \cite{webb} &           \cite{crc} \\
     Be &  0.0260 &   37.60 &  \cite{schmidt} (but \cite{webb} reports 1440 K) &           \cite{crc} \\
      W &  0.0100 &   54.40 &                                 \cite{webb} &           \cite{crc} \\
     Li &  0.0004 &   95.50 &                                 \cite{webb} &           \cite{crc} \\
     Rh &  0.0003 &   43.00 &                                 \cite{webb} &  at 273 K \cite{crc} \\
\bottomrule
\end{tabular}
