condition mean min max ZT0-3 69.33800000000001 69.0704 69.60560000000001 ZT4-7 92.03165 92.03165 92.03165 ZT8-11 70.60825 70.60825 70.60825 ZT12-15 0 0 0 ZT16-19 52.4593 52.4593 52.4593 ZT20-23 67.5867 67.5867 67.5867