condition mean min max ZT0-3 55.0991 54.901399999999995 55.296800000000005 ZT4-7 121.41399999999999 121.41399999999999 121.41399999999999 ZT8-11 94.5332 94.5332 94.5332 ZT12-15 0 0 0 ZT16-19 77.295 77.295 77.295 ZT20-23 68.22645 68.22645 68.22645