condition mean min max ZT0-3 0.1819674 0.167265 0.1966698 ZT4-7 0.331799 0.331799 0.331799 ZT8-11 1.33822 1.33822 1.33822 ZT12-15 0 0 0 ZT16-19 1.118355 1.118355 1.118355 ZT20-23 0.2982545 0.2982545 0.2982545