condition mean min max ZT0-3 37.396 37.396 37.396 ZT4-7 32.44775 32.44775 32.44775 ZT8-11 29.5762 29.5762 29.5762 ZT12-15 32.58035 32.58035 32.58035 ZT16-19 42.11365 42.11365 42.11365 ZT20-23 38.661150000000006 38.661150000000006 38.661150000000006