condition mean min max ZT0-3 0.06245880775 0.0 0.1249176155 ZT4-7 0.850228042 0.6569586795 1.0434974045 ZT8-11 5.81085405225 4.21744612 7.4042619845 ZT12-15 8.404184128499999 8.2247889805 8.5835792765 ZT16-19 4.470611556 4.1307734924999995 4.8104496195 ZT20-23 4.58365778 4.313002874 4.854312686