condition mean min max ZT0-3 124.4355482175 120.113386935 128.7577095 ZT4-7 43.2305278575 37.086793915 49.3742618 ZT8-11 26.442845225 24.62857707 28.25711338 ZT12-15 21.64355931 20.665199265 22.621919355 ZT16-19 32.0274239125 29.043550885000002 35.01129694 ZT20-23 42.7079275925 42.648987149999996 42.766868035