condition mean min max ZT0-3 0.0 0.0 0.0 ZT4-7 0.03669135 0.03669135 0.03669135 ZT8-11 0.0366558 0.0366558 0.0366558 ZT12-15 0 0 0 ZT16-19 0.0 0.0 0.0 ZT20-23 0.0 0.0 0.0