condition mean min max ZT0-3 14.55 14.55 14.55 ZT4-7 55.1 55.1 55.1 ZT8-11 40.85 40.85 40.85 ZT12-15 28.299999999999997 28.299999999999997 28.299999999999997 ZT16-19 55.25 55.25 55.25 ZT20-23 37.7 37.7 37.7