condition mean min max ZT0-3 132.75 132.75 132.75 ZT4-7 78.8 78.8 78.8 ZT8-11 96.6 96.6 96.6 ZT12-15 62.4 62.4 62.4 ZT16-19 134.3 134.3 134.3 ZT20-23 152.95 152.95 152.95