condition mean min max ZT0-3 5.87833 5.76939 5.9872700000000005 ZT4-7 4.715 4.715 4.715 ZT8-11 7.984235 7.984235 7.984235 ZT12-15 0 0 0 ZT16-19 5.675535 5.675535 5.675535 ZT20-23 5.895385 5.895385 5.895385