
Operator
’s Guide
Appendix D
003-4500
RJS, Minneapolis, MN
73
Appendix D (Reflectance parameter
grading)
Table D-1 (Modulation percentage ranges to Numeric and
Letter Grades)
Min
Max
Numeric
Letter
70
100
4.0
A
69
69.99
3.9
A
68
68.99
3.8
A
67
67.99
3.7
A
66
66.99
3.6
A
65
65.99
3.5
A
64
64.99
3.4
B
63
63.99
3.3
B
62
62.99
3.2
B
61
61.99
3.1
B
60
60.99
3.0
B
59
59.99
2.9
B
58
58.99
2.8
B
57
57.99
2.7
B
56
56.99
2.6
B
55
55.99
2.5
B
54
54.99
2.4
C
53
53.99
2.3
C
52
52.99
2.2
C
51
51.99
2.1
C
50
50.99
2.0
C
49
49.99
1.9
C
48
48.99
1.8
C
47
47.99
1.7
C
46
46.99
1.6
C
45
45.99
1.5
C
44
44.99
1.4
D
43
43.99
1.3
D
42
42.99
1.2
D
41
41.99
1.1
D
40
40.99
1.0
D
36
39.99
0.9
D
32
35.99
0.8
D
28
31.99
0.7
D
24
27.99
0.6
D
20
23.99
0.5
D
16
19.99
0.4
F
12
15.99
0.3
F
8
11.99
0.2
F
4
7.99
0.1
F
0
3.99
0.0
F