condition mean min max ZT0-3 0.27778733333333333 0.0 0.4254305 ZT4-7 0.0 0.0 0.0 ZT8-11 0.0 0.0 0.0 ZT12-15 0.2162735 0.0 0.432547 ZT16-19 0.0 0.0 0.0 ZT20-23 0.0 0.0 0.0