condition mean min max ZT0-3 1071.6 1071.6 1071.6 ZT4-7 795.5 795.5 795.5 ZT8-11 797.6 797.6 797.6 ZT12-15 850.05 850.05 850.05 ZT16-19 868.6 868.6 868.6 ZT20-23 1088.4 1088.4 1088.4