\begin{table}%t1
\caption{Mean spectral indices $\bar{\gamma _0}$, $\bar{\gamma
_1}$ and $\bar{\gamma _2}$ for all selected events at selected
ranges of~$\mu$. K-S~prob. corresponds to probability that a~pair
of distributions comes from the same parent distribution. The
number of events in each $\mu$~bin is indicated in brackets.}
\label{meanvalues}
%%\centering

\small
\begin{tabular}{lcccc}
\hline\hline
albedo corr.& $\mu$&$\bar{\gamma}_0$ (N)&$\bar{\gamma}_1$ (N)&$\bar{\gamma}_2$ (N)\\
\hline
none&$\mu < 0.5$& $4.6\pm0.1\ (157)$&$4.2\pm0.1\ (157)$&$3.61\pm0.09\ (45)$\\
none&$\mu \ge 0.5$&  $4.3\pm0.1\ (241)$&$4.07\pm0.06\ (241)$&$3.88\pm0.09\ (78)$\\
\hline
K-S prob.&&0.2&0.2&0.2\\
\hline
$\alpha(\mu)=1$&$\mu < 0.5$& $4.8\pm0.1\ (157)$&$4.3\pm0.1\ (157)$&$3.5\pm0.1\ (45)$\\
$\alpha(\mu)=1$&$\mu\ge 0.5$& $4.8\pm0.1\ (241)$&$4.12\pm0.06\ (241)$&$3.6\pm0.1\ (78)$\\
\hline
K-S prob.&& 1.0 &0.2&0.5\\
\hline
none& $\mu < 0.1$ & $4.7\pm0.2\ (49)$&$4.4\pm0.2\ (49)$& $3.5\pm0.2\ (13)$\\
none& $\mu > 0.9$ & $4.2\pm0.2\ (81)$&$4.1\pm0.1\ (81)$& $3.9\pm0.1\ (29)$\\
\hline
K-S prob.&& 0.009  & 0.4 & 0.4\\
\hline
$\alpha(\mu)=1$& $\mu < 0.1$ & $4.8\pm0.2\ (49)$& $4.4\pm0.2\ (49)$& $3.4\pm0.2\ (13)$\\
$\alpha(\mu)=1$& $\mu > 0.9$ & $4.8\pm0.2\ (81)$  & $4.2\pm0.1\ (81)$& $3.6\pm0.1\ (29)$\\
\hline
K-S prob.&& 0.4 &  0.4 & 0.8\\
\hline
\end{tabular}
\end{table}