condition mean min max ZT0-3 0.028017833333333336 0.0 0.0840535 ZT4-7 0.0 0.0 0.0 ZT8-11 0.0 0.0 0.0 ZT12-15 0.0 0.0 0.0 ZT16-19 0.07646249999999999 0.07646249999999999 0.07646249999999999 ZT20-23 0.04391 0.04391 0.04391