condition mean min max ZT0-3 0.09456690000000001 0.0936553 0.09547850000000001 ZT4-7 0.0959918 0.0959918 0.0959918 ZT8-11 0.09551925 0.09551925 0.09551925 ZT12-15 0 0 0 ZT16-19 0.09403524999999999 0.09403524999999999 0.09403524999999999 ZT20-23 0.22655350000000002 0.22655350000000002 0.22655350000000002