condition mean min max ZT0-3 134.95 134.95 134.95 ZT4-7 203.5 203.5 203.5 ZT8-11 165.5 165.5 165.5 ZT12-15 146.9 146.9 146.9 ZT16-19 124.6 124.6 124.6 ZT20-23 107.15 107.15 107.15