Appendix C: Tables for CIE D65 Reference Spectrum and Spectral Daylight Temperature Model

TABLE C.1

CIE D65 Reference Spectrum Relative Amplitude,

S0, S-|, S2 Functions for Use in Equations 7.2-7.4

D65 Reference D50 Example

Wavelength

(nm)

Spectrum S(X) (Relative Units)

S0QO

MM

S2M

Calculation (Relative Units)

300

0.03

0.04

0.02

0.00

0.02

305

1.66

3.02

2.26

1.00

1.04

310

3.29

6.00

4.50

2.00

2.05

315

11.77

17.80

13.45

3.00

4.92

320

20.24

29.60

22.40

4.00

7.78

325

28.64

42.45

32.20

6.25

11.27

330

37.05

55.30

42.00

8.50

14.76

335

38.50

56.30

41.30

8.15

16.36

340

40.00

57.30

40.60

7.80

17.96

345

42.43

59.50

41.10

7.25

19.44

350

44.91

61.80

41.60

6.70

21.02

355

45.78

61.65

39.80

6.00

22.49

360

46.64

61.50

38.00

5.30

23.95

365

49.36

65.15

40.20

5.70

25.46

370

52.09

68.80

42.40

6.10

26.97

375

51.03

66.10

40.45

4.55

25.74

380

49.98

63.40

38.50

3.00

24.50

385

52.31

64.60

36.75

2.10

27.19

390

54.65

65.80

35.00

1.20

29.88

395

68.70

80.30

39.20

0.05

39.60

400

82.75

94.80

43.40

-1.10

49.32

405

87.12

99.80

44.85

-0.50

53.03

410

91.49

104.80

46.30

-0.50

56.53

415

92.46

105.30

45.10

-0.60

58.24

420

93.43

105.90

43.90

-0.70

60.05

TABLE C.1 (Continued)

CIE D65 Reference Spectrum Relative Amplitude,

S0, S1, S2 Functions for Use in Equations 7.2-7.4

D65 Reference D50 Example

Wavelength

Spectrum S(X)

Calculation

(nm)

(Relative Units)

S0QO

MM

S2M

(Relative Units)

425

90.06

101.35

40.50

-0.95

58.94

430

86.68

96.80

37.10

-1.20

57.83

435

95.77

105.35

36.90

-1.95

66.32

440

104.86

113.90

36.70

-2.60

74.84

445

110.94

119.75

36.30

-2.75

81.05

450

117.01

125.60

35.90

-2.90

87.26

455

117.41

125.50

34.25

-2.85

88.89

460

117.81

125.50

32.60

-2.80

90.62

465

116.34

123.40

30.25

-2.70

91.00

470

114.86

121.30

27.90

-2.60

91.38

475

115.39

121.30

26.10

-2.60

93.25

480

115.92

121.30

24.30

-2.60

95.12

485

112.37

117.40

22.20

-2.20

93.54

490

108.81

113.50

20.10

-1.80

91.97

495

109.80

113.30

18.15

-1.66

93.85

500

109.35

113.10

16.20

-1.50

95.73

505

108.58

111.95

14.70

-1.40

96.17

510

107.80

110.80

13.20

-1.30

96.62

515

106.30

108.65

10.90

-1.25

96.88

520

104.79

106.50

8.60

-1.20

97.13

525

106.24

107.65

7.35

-1.10

99.62

530

107.69

108.80

6.10

-1.00

102.10

535

106.05

107.05

5.15

-0.75

101.43

540

104.41

105.30

4.20

-0.50

100.76

545

104.23

104.85

3.05

-0.30

101.57

550

104.05

104.40

1.90

-0.30

102.32

555

102.02

102.40

0.95

-0.15

101.36

560

100.00

100.00

0.00

0.00

100.00

565

98.17

98.00

-0.80

0.10

98.87

570

96.33

96.00

-1.60

0.20

97.73

575

96.06

95.55

-2.55

0.30

98.31

580

95.79

95.10

-3.50

0.50

98.92

585

92.24

92.10

-3.50

1.30

96.21

590

88.69

89.10

-3.50

2.10

93.50

595

89.35

89.80

-4.65

2.65

95.59

600

90.01

90.50

-5.80

3.20

97.68

605

89.80

90.40

-6.05

3.65

98.01

610

89.60

90.30

-7.20

4.10

99.27

TABLE C.1 (Continued)

CIE D65 Reference Spectrum Relative Amplitude,

S0, S1, S2 Functions for Use in Equations 7.2-7.4

D65 Reference D50 Example

Wavelength

Spectrum S(X)

Calculation

(nm)

(Relative Units)

S0QO

MM

S2M

(Relative Units)

615

88.65

89.35

-7.90

4.40

99.15

620

87.70

88.40

-8.60

4.70

99.04

625

85.49

86.20

-9.05

4.90

97.38

630

83.29

84.00

-9.50

5.10

95.72

635

83.49

84.55

-10.20

5.90

97.28

640

83.70

85.10

-10.90

6.70

98.85

645

81.86

83.50

-10.80

7.00

97.26

650

80.03

81.90

-10.70

7.30

95.66

655

80.12

82.25

-11.35

8.00

96.94

660

80.21

82.60

-12.00

8.60

98.18

665

81.25

83.75

-13.00

9.20

100.59

670

82.28

84.90

-14.00

9.80

103.00

675

80.28

83.10

-13.80

10.00

101.06

680

78.28

81.30

-13.60

10.20

99.13

685

74.00

79.60

-12.80

9.25

96.25

690

69.72

71.90

-12.00

8.30

87.37

695

70.67

73.10

-12.65

8.95

89.49

700

71.61

74.30

-13.30

9.60

91.60

705

72.98

75.35

-13.10

9.08

92.25

710

74.35

76.40

-12.90

8.50

92.88

715

67.98

69.85

-11.75

7.75

84.87

720

61.60

63.30

-10.60

7.00

76.85

725

65.74

67.50

-11.10

7.30

81.68

730

69.89

71.70

-11.60

7.60

86.50

735

72.49

74.35

-11.90

7.80

89.54

740

75.09

77.00

-12.20

8.00

92.57

745

69.34

71.10

-11.20

7.35

85.40

750

63.59

65.20

-10.20

6.70

78.22

755

55.01

56.45

-9.00

5.95

67.96

760

46.42

47.70

-7.80

5.20

57.69

765

56.61

58.15

-9.50

6.30

70.30

770

66.81

68.60

-11.20

7.40

82.92

775

65.09

66.80

-10.80

7.10

80.59

780

63.38

65.00

-10.40

6.80

78.27

785

63.84

65.50

-10.50

6.90

78.91

790

64.30

66.00

-10.60

7.00

79.55

795

61.88

63.50

-10.15

6.70

76.47

800

59.45

61.00

-9.70

6.40

73.40

TABLE C.1 (Continued)

CIE D65 Reference Spectrum Relative Amplitude, S0, S1, S2 Functions for Use in Equations 7.2-7.4

D65 Reference

D50 Example

Wavelength

Spectrum S(X)

Calculation

(nm)

(Relative Units)

S0QO

MW

S2M

(Relative Units)

805

55.71

57.15

-9.00

5.95

68.66

810

51.96

53.30

-8.30

5.50

63.92

815

54.70

53.30

-8.30

5.80

64.02

820

57.44

58.90

-9.30

6.10

70.77

825

58.88

60.40

-9.55

6.30

72.60

830

60.31

61.90

-9.80

6.50

74.44

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