condition mean min max ZT0-3 166.835 135.478 213.9925 ZT4-7 184.60649999999998 184.60649999999998 184.60649999999998 ZT8-11 153.212 153.212 153.212 ZT12-15 168.3695 159.832 176.90699999999998 ZT16-19 147.09550000000002 147.09550000000002 147.09550000000002 ZT20-23 104.1505 104.1505 104.1505