object & 6 & 7 & 8 & 9 & 10 & mean
\\ mean dev. & 10.78 & 9.92 & 12.63 & 12.35 & 9.51 & 11.04
\\ std. dev. & 14.45 & 13.41 & 17.07 & 17.09 & 13.23 & 15.05