condition mean min max ZT0-3 35.731899999999996 35.731899999999996 35.731899999999996 ZT4-7 30.0299 30.0299 30.0299 ZT8-11 28.20415 28.20415 28.20415 ZT12-15 30.864800000000002 30.864800000000002 30.864800000000002 ZT16-19 37.6931 37.6931 37.6931 ZT20-23 35.364149999999995 35.364149999999995 35.364149999999995