condition mean min max ZT0-3 0.020682570333333334 0.0 0.04136514066666667 ZT4-7 0.0 0.0 0.0 ZT8-11 0.0 0.0 0.0 ZT12-15 0.0397314235 0.0 0.079462847 ZT16-19 0.0 0.0 0.0 ZT20-23 0.0642073085 0.0 0.128414617