condition mean min max ZT0-3 0.6977503333333334 0.5077005 0.9541185 ZT4-7 0.7985435000000001 0.7985435000000001 0.7985435000000001 ZT8-11 0.44250750000000005 0.44250750000000005 0.44250750000000005 ZT12-15 0.633918 0.5910415 0.6767945 ZT16-19 0.887569 0.887569 0.887569 ZT20-23 0.7032229999999999 0.7032229999999999 0.7032229999999999