condition mean min max ZT0-3 0.00952295 0.0 0.0190459 ZT4-7 0.012239 0.012239 0.012239 ZT8-11 0.09419240000000001 0.09419240000000001 0.09419240000000001 ZT12-15 0.114158075 0.051860149999999994 0.176456 ZT16-19 0.0840514 0.0539143 0.1141885 ZT20-23 0 0 0