condition mean min max ZT0-3 34.95675 34.95675 34.95675 ZT4-7 18.338250000000002 18.338250000000002 18.338250000000002 ZT8-11 24.93985 24.93985 24.93985 ZT12-15 27.5133 27.5133 27.5133 ZT16-19 42.28915 42.28915 42.28915 ZT20-23 40.733900000000006 40.733900000000006 40.733900000000006