condition mean min max ZT0-3 5.45 5.45 5.45 ZT4-7 29.7 29.7 29.7 ZT8-11 43.2 43.2 43.2 ZT12-15 29.95 29.95 29.95 ZT16-19 44.25 44.25 44.25 ZT20-23 33.4 33.4 33.4