condition mean min max ZT0-3 0.18492575 0.0852035 0.284648 ZT4-7 0.084119 0.084119 0.084119 ZT8-11 0.02813645 0.02813645 0.02813645 ZT12-15 0 0 0 ZT16-19 0.05597265 0.05597265 0.05597265 ZT20-23 0.0 0.0 0.0