condition mean min max ZT0-3 0.06350216666666667 0.0 0.1905065 ZT4-7 0.0 0.0 0.0 ZT8-11 0.365514 0.365514 0.365514 ZT12-15 0.0 0.0 0.0 ZT16-19 0.0 0.0 0.0 ZT20-23 0.0 0.0 0.0