condition mean min max ZT0-3 46.7 46.7 46.7 ZT4-7 39.5 39.5 39.5 ZT8-11 34.1 34.1 34.1 ZT12-15 78.95 78.95 78.95 ZT16-19 35.25 35.25 35.25 ZT20-23 26.299999999999997 26.299999999999997 26.299999999999997