Table 3 The average of a checker board image under six different color temperature light sources.

27.2081

1.0732

3.1478

1.0486

1.0083

0.6997

27.4791

1.0535

1.0803

0.9990

1.0057

0.7731

23.4127

0.9412

1.0961

0.9463

1.0466

0.7197

31.7124

1.2960

4.0441

1.2662

1.4153

0.8413

19.5384

0.9778

2.4763

0.9351

0.9490

0.7058

25.5908

2.0421

1.7281

1.0986

0.9233

0.6822

25.8236

1.2306

2.2621

1.0490

1.0580

0.7370