condition mean min max ZT0-3 110.35 110.35 110.35 ZT4-7 66.2 66.2 66.2 ZT8-11 42.05 42.05 42.05 ZT12-15 73.05000000000001 73.05000000000001 73.05000000000001 ZT16-19 68.35 68.35 68.35 ZT20-23 161.25 161.25 161.25