condition mean min max ZT0-3 0.0 0.0 0.0 ZT4-7 0.0 0.0 0.0 ZT8-11 0.0056447 0.0056447 0.0056447 ZT12-15 0.0 0.0 0.0 ZT16-19 0.0031282166666666664 0.0031282166666666664 0.0031282166666666664 ZT20-23 0.020255429999999998 0.020255429999999998 0.020255429999999998