condition mean min max ZT0-3 29.436782 29.436782 29.436782 ZT4-7 32.559651 32.559651 32.559651 ZT8-11 37.885110499999996 37.885110499999996 37.885110499999996 ZT12-15 54.943455 54.943455 54.943455 ZT16-19 50.565139 50.565139 50.565139 ZT20-23 34.3838255 34.3838255 34.3838255