condition mean min max ZT0-3 37.5755 37.5755 37.5755 ZT4-7 37.5685 37.5685 37.5685 ZT8-11 27.496850000000002 27.496850000000002 27.496850000000002 ZT12-15 30.78635 30.78635 30.78635 ZT16-19 32.3159 32.3159 32.3159 ZT20-23 43.5845 43.5845 43.5845