condition mean min max ZT0-3 110.45 110.45 110.45 ZT4-7 68.8 68.8 68.8 ZT8-11 42.45 42.45 42.45 ZT12-15 53.9 53.9 53.9 ZT16-19 97.65 97.65 97.65 ZT20-23 87.6 87.6 87.6