object & 6 & 7 & 8 & 9 & 10 & mean
\\ mean dev. & 11.39 & 7.96 & 7.93 & 7.73 & 8.65 & 8.73
\\ std. dev. & 15.92 & 10.68 & 10.62 & 10.34 & 13.04 & 12.12