condition mean min max ZT0-3 0.5568616666666667 0.0 0.932635 ZT4-7 0.81753 0.81753 0.81753 ZT8-11 0.0 0.0 0.0 ZT12-15 0.0 0.0 0.0 ZT16-19 0.0 0.0 0.0 ZT20-23 0.0 0.0 0.0