condition mean min max ZT0-3 60.2327 55.804500000000004 64.6609 ZT4-7 19.78725 19.78725 19.78725 ZT8-11 4.478815 4.478815 4.478815 ZT12-15 0 0 0 ZT16-19 19.053 19.053 19.053 ZT20-23 33.32765 33.32765 33.32765