Table 2: Membership grade between luminosity and fuzzy assessment.

Luminosity2030405060

Appropriate 0.200.100.000.000.00
Less appropriate 1.000.310.000.000.00
All right0.641.000.370.250.20
Brighter 0.120.731.000.900.85
Too bight 0.000.000.900.951.00