condition mean min max ZT0-3 0.281432 0.233252 0.3483135 ZT4-7 0.0 0.0 0.0 ZT8-11 0.0 0.0 0.0 ZT12-15 0.023715375 0.0 0.04743075 ZT16-19 0.0828945 0.0828945 0.0828945 ZT20-23 0.32049000000000005 0.32049000000000005 0.32049000000000005