condition mean min max ZT0-3 165.64999999999998 165.64999999999998 165.64999999999998 ZT4-7 139.3 139.3 139.3 ZT8-11 90.95 90.95 90.95 ZT12-15 149.10000000000002 149.10000000000002 149.10000000000002 ZT16-19 243.3 243.3 243.3 ZT20-23 151.55 151.55 151.55