e. m . GraderGrade+ 4-5 + 5 , o + 6,0 4 " 5 , o 4- 8,0 4- 1,0 + 7,5 6,5 - f- 5,0 +■ , , o + 5.5A- 7,0 + 3,5 + 6,0 + 5,5 + 5,0 - t-5,0