condition mean min max ZT0-3 785.65 785.65 785.65 ZT4-7 780.7 780.7 780.7 ZT8-11 626.3 626.3 626.3 ZT12-15 408.8 408.8 408.8 ZT16-19 271.5 271.5 271.5 ZT20-23 280.95000000000005 280.95000000000005 280.95000000000005