condition mean min max ZT0-3 74.99446902 62.56869956 87.42023848 ZT4-7 71.0149836175 64.924135935 77.10583129999999 ZT8-11 43.337362999999996 41.317627099999996 45.3570989 ZT12-15 42.1860764 38.570680069999995 45.80147273 ZT16-19 80.6136756475 66.09705087 95.130300425 ZT20-23 150.36217607499998 121.63663084999999 179.0877213