\begin{table}%t6 \caption{\label{gam}List of \yohkoh~coronal $\gamma$-ray flares.} %\centerline { \begin{tabular}{clcccc} \hline\hline Catalogue & Date & GOES & Longitude & Occultation & Photons \\ number & & class & & height [Mm] & energy [keV]\\ \hline 6240 & 1992 November 2 & X9.0 & W97.9 & 7.4 & $<$600$^{a}$ \\ 11650 & 1998 April 23 & X1.2 & E103.7 & 21.4 & $<$250 \\ 11950 & 1998 May 9 & M7.7 & W102.3 & 17.1 & $<$200 \\ 13650 & 1998 November 24 & X1.0 & W103.1 & 21.5 & $<$600$^{a}$ \\ 26060 & 2001 April 18 & C2.2 & W116.9 & 90.5 & $<$250 \\ \hline \end{tabular}} \medskip \par $^{a}$ Only the decay phase is available. \end{table}