condition mean min max ZT0-3 65.796089 65.796089 65.796089 ZT4-7 57.650257499999995 57.650257499999995 57.650257499999995 ZT8-11 65.6208875 65.6208875 65.6208875 ZT12-15 91.362198 91.362198 91.362198 ZT16-19 83.308765 83.308765 83.308765 ZT20-23 103.08952350000001 103.08952350000001 103.08952350000001