condition mean min max ZT0-3 0.017854666666666668 0.0 0.053564 ZT4-7 0.0 0.0 0.0 ZT8-11 0.11022950000000001 0.11022950000000001 0.11022950000000001 ZT12-15 0.08362675 0.0598495 0.107404 ZT16-19 0.0 0.0 0.0 ZT20-23 0.0 0.0 0.0