condition mean min max ZT0-3 0.010757166666666667 0.0 0.0322715 ZT4-7 0.0 0.0 0.0 ZT8-11 0.0 0.0 0.0 ZT12-15 0.017941575 0.0 0.03588315 ZT16-19 0.0 0.0 0.0 ZT20-23 0.0 0.0 0.0