\begin{table}%T1
\caption{\label{tab_noms}Observational characteristics of the selected NR~electron events.}
\small%\centering
\par
\begin{tabular}{cccrccccllcrrrcr}
\hline\hline
\multicolumn{8}{c}{Electron event} &   & \multicolumn{2}{c}{Solar wind} &   & \multicolumn{4}{c}{IMF at 1~AU}\\
\cline{1-8} \cline{10-11} \cline{13-16} 
  &   & $t_0$ & Rise & Period &   &   & $\langle\mu\mbox{-co}\rangle$ &   & $\langle u\rangle$ & footpoint &   & $\langle\theta\rangle$ & $\langle\phi\rangle$ & \multicolumn{2}{c}{polarity}\\
\cline{15-16}
Name & Date &  (UT) & (min) & (UT) & $S$ & $\gamma_{\rm s}$ & (\%) &   & (km s$^{-1}$) & ($^\circ$) &   & ($^\circ$) & ($^\circ$) & mode & \%\\
\hline
May98 & 1998 May 27 & 13:30 & 57 & 13:25--17:30 & 1.5 & $3.8\pm0.1$ & 89 & & $354\pm 4$ & W68 & & $-4\pm18$ & $331\pm40$ & $-1$ & 99\\
May00 & 2000 May ~1 & 10:25 & 11 & 10:20--12:00 & 2.8 & $2.9\pm0.1$ & 71 &  & $437\pm19$ & W55 & & $-11\pm25$ & $322\pm21$ & $-1$ & 100\\
Jul00 & 2000 Jul.~ 14 & 10:37 & 1561 & 10:30--13:30 & 1.4 & $2.1\pm0.1$ & 89 &  & $593\pm12$ & W40 & & $-12\pm39$ & $137\pm38$ & $+1$ & 96\\
Nov00 & 2000 Nov. 08 & 23:00 & 60 & 22:55--03:00 & 4.3 & $2.1\pm0.2$ & 87 & & $444\pm7$ & W54 & & $-13\pm15$ & $310\pm14$ & $-1$ & 100\\
Apr01 & 2001 Apr. 15 & 14:02 & 142 & 13:55--18:00 & 2.0 & $2.3\pm0.2$ & 90 & & $504\pm9$ & W48 & & $-19\pm27$ & $314\pm66$ & $-1$ & 76\\
Dec01 & 2001 Dec. 26 & 05:27 & 84 & 05:20--09:00 & 2.9 & $3.0\pm0.1$ & 78 &  & $374\pm 7$ & W64 & & $25\pm21$ & $349\pm51$ & $-1$ & 93\\
Aug02 & 2002 Aug. 24 & 01:24 & 56 & 01:20--04:20 & 1.8 & $2.5\pm0.2$ & 90 &  & $390\pm9$ & W62 & & $-1\pm10$ & $291\pm24$ & $-1$ & 100\\
Oct02 & 2002 Oct. 20 & 14:22 & 5 & 14:15--18:00 & 1.6 & $3.1\pm0.2$ & 87 &  & $642\pm21$ & W37 & & $-3\pm22$ & $310\pm17$ & $-1$ & 100\\
Dec02 & 2002 Dec. 19 & 21:55 & 45 & 21:50--02:00 & 2.3 & $3.1\pm0.2$ & 92 &  & $528\pm12$ & W46 & & $12\pm30$ & $120\pm35$ & $+1$ & 98\\
Sep04 & 2004 Sep. 19 & 17:19 & 85 & 17:10--20:45 & 2.2 & $2.6\pm0.1$ & 88 &  & $376\pm 4$ & W64 & & $-3\pm20$ & $133\pm17$ & $+1$ & 100\\
Jun05 & 2005 Jun. 16 & 20:30 & 130 & 20:25--24:00 & 1.7 & $2.6\pm0.2$ & 86 &  & $652\pm15$ & W37 & & $-7\pm24$ & $111\pm47$ & $+1$ & 91\\
\hline
\end{tabular}
\end{table}