condition mean min max ZT0-3 50.044998 50.044998 50.044998 ZT4-7 42.1665055 42.1665055 42.1665055 ZT8-11 47.697736 47.697736 47.697736 ZT12-15 35.039256 35.039256 35.039256 ZT16-19 48.489961 48.489961 48.489961 ZT20-23 44.9505385 44.9505385 44.9505385