condition mean min max ZT0-3 73.49405 41.893100000000004 89.5085 ZT4-7 29.54955 29.54955 29.54955 ZT8-11 19.31515 19.31515 19.31515 ZT12-15 34.057 31.55225 36.56175 ZT16-19 41.6798 41.6798 41.6798 ZT20-23 61.866699999999994 61.866699999999994 61.866699999999994