condition mean min max ZT0-3 0.007526346833333333 0.0 0.015052693666666665 ZT4-7 0.017254193499999997 0.0 0.034508386999999995 ZT8-11 0.018272771 0.0 0.036545542 ZT12-15 0.0 0.0 0.0 ZT16-19 0.0 0.0 0.0 ZT20-23 0.0 0.0 0.0