condition mean min max ZT0-3 0.539305 0.502905 0.559635 ZT4-7 0.51334 0.51334 0.51334 ZT8-11 0.683985 0.683985 0.683985 ZT12-15 0.21096575 0.2046355 0.217296 ZT16-19 1.1840255 1.1840255 1.1840255 ZT20-23 3.607425e-09 3.607425e-09 3.607425e-09