condition mean min max ZT0-3 0.24777675 0.0 0.4955535 ZT4-7 0.50014 0.50014 0.50014 ZT8-11 0.501865 0.501865 0.501865 ZT12-15 0 0 0 ZT16-19 0.996405 0.996405 0.996405 ZT20-23 0.0 0.0 0.0