condition mean min max ZT0-3 0.0 0.0 0.0 ZT4-7 0.0 0.0 0.0 ZT8-11 0.065055 0.065055 0.065055 ZT12-15 0.019762166666666667 0.0 0.039524333333333335 ZT16-19 0.0 0.0 0.0 ZT20-23 0.0 0.0 0.0