condition mean min max ZT0-3 76.95 76.95 76.95 ZT4-7 62.6 62.6 62.6 ZT8-11 117.19999999999999 117.19999999999999 117.19999999999999 ZT12-15 131.05 131.05 131.05 ZT16-19 102.1 102.1 102.1 ZT20-23 69.55 69.55 69.55