condition mean min max ZT0-3 40.8445 40.8445 40.8445 ZT4-7 33.73315 33.73315 33.73315 ZT8-11 30.6616 30.6616 30.6616 ZT12-15 34.444950000000006 34.444950000000006 34.444950000000006 ZT16-19 42.72075 42.72075 42.72075 ZT20-23 40.916 40.916 40.916