condition mean min max ZT0-3 2.06406 2.06406 2.06406 ZT4-7 27.5029 27.5029 27.5029 ZT8-11 8.121255 8.121255 8.121255 ZT12-15 3.964855 3.964855 3.964855 ZT16-19 0.0644215 0.0644215 0.0644215 ZT20-23 0.289983 0.289983 0.289983