condition mean min max ZT0-3 0.00871165 0.0 0.02613495 ZT4-7 0.0 0.0 0.0 ZT8-11 0.0 0.0 0.0 ZT12-15 0.026091549999999998 0.0 0.052183099999999996 ZT16-19 0.0 0.0 0.0 ZT20-23 0.0 0.0 0.0