condition mean min max ZT0-3 94.3 94.3 94.3 ZT4-7 114.6 114.6 114.6 ZT8-11 69.65 69.65 69.65 ZT12-15 125.0 125.0 125.0 ZT16-19 83.7 83.7 83.7 ZT20-23 85.5 85.5 85.5