condition mean min max ZT0-3 69.65 69.65 69.65 ZT4-7 46.6 46.6 46.6 ZT8-11 146.15 146.15 146.15 ZT12-15 105.15 105.15 105.15 ZT16-19 81.9 81.9 81.9 ZT20-23 104.65 104.65 104.65