condition mean min max ZT0-3 0.80536425 0.5847185 1.0260099999999999 ZT4-7 0.11383485 0.11383485 0.11383485 ZT8-11 0.229348 0.229348 0.229348 ZT12-15 0 0 0 ZT16-19 0.71791 0.71791 0.71791 ZT20-23 0.5635095 0.5635095 0.5635095