condition mean min max ZT0-3 1.127993 0.0 3.07483 ZT4-7 1.01781 1.01781 1.01781 ZT8-11 0.0 0.0 0.0 ZT12-15 0.42080275206749995 0.380912 0.460693504135 ZT16-19 0.0 0.0 0.0 ZT20-23 0.0 0.0 0.0