condition mean min max ZT0-3 0.0 0.0 0.0 ZT4-7 0.1232525 0.1232525 0.1232525 ZT8-11 0.3026445 0.3026445 0.3026445 ZT12-15 0 0 0 ZT16-19 0.357107 0.357107 0.357107 ZT20-23 0.0 0.0 0.0