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