condition mean min max ZT0-3 10.343499 10.343499 10.343499 ZT4-7 33.262798000000004 33.262798000000004 33.262798000000004 ZT8-11 34.95942 34.95942 34.95942 ZT12-15 26.542392 26.542392 26.542392 ZT16-19 19.872795 19.872795 19.872795 ZT20-23 18.086584000000002 18.086584000000002 18.086584000000002