condition mean min max ZT0-3 44.21611333333333 10.87679 77.9228 ZT4-7 39.9553 39.9553 39.9553 ZT8-11 72.55905 72.55905 72.55905 ZT12-15 48.1694 29.6439 66.6949 ZT16-19 49.60945 49.60945 49.60945 ZT20-23 35.5368 35.5368 35.5368