condition mean min max ZT0-3 97.43677500000001 83.77905 111.09450000000001 ZT4-7 57.529399999999995 57.529399999999995 57.529399999999995 ZT8-11 42.3266 42.3266 42.3266 ZT12-15 0 0 0 ZT16-19 61.872299999999996 61.872299999999996 61.872299999999996 ZT20-23 68.17795 68.17795 68.17795