condition mean min max ZT0-3 150.55 150.55 150.55 ZT4-7 96.4 96.4 96.4 ZT8-11 60.85 60.85 60.85 ZT12-15 140.7 140.7 140.7 ZT16-19 131.9 131.9 131.9 ZT20-23 91.75 91.75 91.75