The computer grades are QFVC=F, QFEV1=C. The lower computer FVC and FEV1 grades are due to a lack of a repeatable FEV1 (closest FVC is 321 ml; and closest FEV1 is 195 ml). Curve #2 (green) is larger than the other curves possibly due to a deeper inhalation. Interestingly, if not for curve #2 (green) this test would have been graded by the computer as A, A. Because of the similarity between the curves and the slightly lower ratio (73.7%), the FVC grade is increased to a C or QFVC=C and QFEV1=C.
