condition mean min max ZT0-3 74.2498 66.9879 85.44125 ZT4-7 66.91584999999999 66.91584999999999 66.91584999999999 ZT8-11 65.18885 65.18885 65.18885 ZT12-15 90.894675 89.28555 92.5038 ZT16-19 85.936 85.936 85.936 ZT20-23 78.34875 78.34875 78.34875