condition mean min max ZT0-3 5628.833619 5628.833619 5628.833619 ZT4-7 4698.5250479999995 4698.5250479999995 4698.5250479999995 ZT8-11 3758.5474805000003 3758.5474805000003 3758.5474805000003 ZT12-15 10755.4514865 10755.4514865 10755.4514865 ZT16-19 4812.538722 4812.538722 4812.538722 ZT20-23 10601.922567 10601.922567 10601.922567