condition mean min max ZT0-3 93.15 93.15 93.15 ZT4-7 67.0 67.0 67.0 ZT8-11 64.8 64.8 64.8 ZT12-15 90.7 90.7 90.7 ZT16-19 69.75 69.75 69.75 ZT20-23 163.3 163.3 163.3