condition mean min max ZT0-3 0.0 0.0 0.0 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 0.04159486575 0.0 0.0831897315 ZT20-23 0.07473837375 0.0660094895 0.083467258