condition mean min max ZT0-3 0.544214 0.438168 0.6502600000000001 ZT4-7 1.1005795 1.1005795 1.1005795 ZT8-11 2.1365049999999997 2.1365049999999997 2.1365049999999997 ZT12-15 0 0 0 ZT16-19 1.3225850000000001 1.3225850000000001 1.3225850000000001 ZT20-23 1.1455685 1.1455685 1.1455685