condition mean min max ZT0-3 0.26243065 0.0 0.5248613 ZT4-7 0.14280754383333333 0.0 0.28561508766666666 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