condition mean min max ZT0-3 0.05054154525000001 0.0 0.10108309050000001 ZT4-7 0.0 0.0 0.0 ZT8-11 0.18363212175000002 0.0 0.36726424350000003 ZT12-15 0.13167345200000002 0.071770106 0.19157679800000002 ZT16-19 0.0 0.0 0.0 ZT20-23 0.31709462125 0.27610445949999995 0.35808478299999996