condition mean min max ZT0-3 0.5796400833333333 0.03669675 1.62388 ZT4-7 0.03728665 0.03728665 0.03728665 ZT8-11 0.0377542 0.0377542 0.0377542 ZT12-15 0.0 0.0 0.0 ZT16-19 0.0 0.0 0.0 ZT20-23 0.0 0.0 0.0