condition mean min max ZT0-3 0.079931 0.0 0.159862 ZT4-7 0.1613415 0.1613415 0.1613415 ZT8-11 0.0 0.0 0.0 ZT12-15 0 0 0 ZT16-19 0.1607165 0.1607165 0.1607165 ZT20-23 0.0 0.0 0.0