condition mean min max ZT0-3 72.469145 72.469145 72.469145 ZT4-7 108.3417845 108.3417845 108.3417845 ZT8-11 77.910292 77.910292 77.910292 ZT12-15 85.024895 85.024895 85.024895 ZT16-19 87.09656749999999 87.09656749999999 87.09656749999999 ZT20-23 98.6204385 98.6204385 98.6204385