condition mean min max ZT0-3 49.44 48.55 50.33 ZT4-7 45.25165 45.25165 45.25165 ZT8-11 46.317400000000006 46.317400000000006 46.317400000000006 ZT12-15 0 0 0 ZT16-19 55.6528 55.6528 55.6528 ZT20-23 61.508799999999994 61.508799999999994 61.508799999999994