condition mean min max ZT0-3 0.0 0.0 0.0 ZT4-7 0.0327532085 0.0 0.065506417 ZT8-11 0.0 0.0 0.0 ZT12-15 0.0753605775 0.06122776 0.08949339499999999 ZT16-19 0.06107712183333333 0.0 0.12215424366666666 ZT20-23 0.0 0.0 0.0