condition mean min max ZT0-3 26.1264 25.613599999999998 26.639200000000002 ZT4-7 62.447649999999996 62.447649999999996 62.447649999999996 ZT8-11 82.47085 82.47085 82.47085 ZT12-15 0 0 0 ZT16-19 45.738600000000005 45.738600000000005 45.738600000000005 ZT20-23 35.925 35.925 35.925