condition mean min max ZT0-3 0.027150999999999998 0.0 0.081453 ZT4-7 0.0 0.0 0.0 ZT8-11 0.0 0.0 0.0 ZT12-15 0.17137225 0.0 0.3427445 ZT16-19 0.240783 0.240783 0.240783 ZT20-23 0.091616 0.091616 0.091616