condition mean min max ZT0-3 82.85 82.85 82.85 ZT4-7 140.5 140.5 140.5 ZT8-11 161.7 161.7 161.7 ZT12-15 100.35 100.35 100.35 ZT16-19 91.05000000000001 91.05000000000001 91.05000000000001 ZT20-23 98.35000000000001 98.35000000000001 98.35000000000001