condition mean min max ZT0-3 35.45 35.45 35.45 ZT4-7 25.2 25.2 25.2 ZT8-11 52.35 52.35 52.35 ZT12-15 34.55 34.55 34.55 ZT16-19 40.15 40.15 40.15 ZT20-23 47.0 47.0 47.0