condition mean min max ZT0-3 1415.1 1415.1 1415.1 ZT4-7 717.7 717.7 717.7 ZT8-11 793.4 793.4 793.4 ZT12-15 689.8 689.8 689.8 ZT16-19 779.3499999999999 779.3499999999999 779.3499999999999 ZT20-23 1084.95 1084.95 1084.95