condition mean min max ZT0-3 0.019754999999999998 0.0 0.059265 ZT4-7 0.0574316 0.0574316 0.0574316 ZT8-11 0.0 0.0 0.0 ZT12-15 0.003199525 0.0 0.00639905 ZT16-19 0.054979 0.054979 0.054979 ZT20-23 0.0 0.0 0.0