condition mean min max ZT0-3 93.539783 93.539783 93.539783 ZT4-7 38.288172 38.288172 38.288172 ZT8-11 24.058750500000002 24.058750500000002 24.058750500000002 ZT12-15 30.405153 30.405153 30.405153 ZT16-19 13.325921 13.325921 13.325921 ZT20-23 16.2133295 16.2133295 16.2133295