condition mean min max ZT0-3 76.772055 76.772055 76.772055 ZT4-7 74.581587 74.581587 74.581587 ZT8-11 89.0128225 89.0128225 89.0128225 ZT12-15 95.9148185 95.9148185 95.9148185 ZT16-19 111.559857 111.559857 111.559857 ZT20-23 66.830133 66.830133 66.830133