condition mean min max ZT0-3 25.05 25.05 25.05 ZT4-7 31.2 31.2 31.2 ZT8-11 27.05 27.05 27.05 ZT12-15 27.95 27.95 27.95 ZT16-19 25.7 25.7 25.7 ZT20-23 18.3 18.3 18.3