condition mean min max ZT0-3 0.0 0.0 0.0 ZT4-7 0.0 0.0 0.0 ZT8-11 0.0276879 0.0276879 0.0276879 ZT12-15 0.090989 0.090989 0.090989 ZT16-19 0.0 0.0 0.0 ZT20-23 0.0 0.0 0.0