condition mean min max ZT0-3 24.95 24.95 24.95 ZT4-7 34.2 34.2 34.2 ZT8-11 75.2 75.2 75.2 ZT12-15 43.2 43.2 43.2 ZT16-19 55.45 55.45 55.45 ZT20-23 40.65 40.65 40.65