condition mean min max ZT0-3 0.01492215 0.01492215 0.01492215 ZT4-7 0.0521863 0.0521863 0.0521863 ZT8-11 0.047307550000000004 0.047307550000000004 0.047307550000000004 ZT12-15 0.02295065 0.02295065 0.02295065 ZT16-19 0.0 0.0 0.0 ZT20-23 0.06780675 0.06780675 0.06780675