condition mean min max ZT0-3 0.21464416666666664 0.0 0.47786549999999994 ZT4-7 0.0 0.0 0.0 ZT8-11 0.0 0.0 0.0 ZT12-15 0.05652625 0.0 0.1130525 ZT16-19 0.174515 0.174515 0.174515 ZT20-23 0.4118005 0.4118005 0.4118005