condition mean min max ZT0-3 81.35 81.35 81.35 ZT4-7 95.3 95.3 95.3 ZT8-11 71.44999999999999 71.44999999999999 71.44999999999999 ZT12-15 54.05 54.05 54.05 ZT16-19 107.85000000000001 107.85000000000001 107.85000000000001 ZT20-23 100.75 100.75 100.75