condition mean min max ZT0-3 0.0 0.0 0.0 ZT4-7 0.1247265 0.1247265 0.1247265 ZT8-11 0.50516 0.50516 0.50516 ZT12-15 0.06164375 0.0 0.1232875 ZT16-19 0.0 0.0 0.0 ZT20-23 0.0 0.0 0.0