condition mean min max ZT0-3 8.14795 8.14795 8.14795 ZT4-7 0.5554495 0.5554495 0.5554495 ZT8-11 0.1760625 0.1760625 0.1760625 ZT12-15 5.642595 5.642595 5.642595 ZT16-19 57.168099999999995 57.168099999999995 57.168099999999995 ZT20-23 24.848 24.848 24.848