condition mean min max ZT0-3 0.0 0.0 0.0 ZT4-7 0.0 0.0 0.0 ZT8-11 0.04745534875 0.0 0.0949106975 ZT12-15 0.2669562065 0.132170918 0.401741495 ZT16-19 0.47811895625 0.0 0.9562379125 ZT20-23 0.14206204374999998 0.1032936875 0.18083039999999997