Red point: darker
Green point: lighter
Blue point: equal
Darker point: 2
Darker reflectance: E
Darker method: C
Equal score: 0.882345502941
Darker point darker score: not computed since the judgement is "E"
darker: 1 (eq: False, dd: False), confidence: 2, worker: ATPCAF2RU1G4C (marked invalid)
darker: E (eq: True, dd: None), confidence: 2, worker: A2EKPA2DR5VSA8
darker: E (eq: True, dd: None), confidence: 2, worker: A3DHYTZ1GPN0T8
darker: E (eq: True, dd: None), confidence: 2, worker: A1IJ5RKJ4MD2AM (marked invalid)
darker: E (eq: True, dd: None), confidence: 0, worker: A3TVDFJ22T1FFN (marked invalid)
darker: E (eq: True, dd: None), confidence: 2, worker: A2ZRJMJTE6ID97
darker: E (eq: True, dd: None), confidence: 2, worker: A3O8YXPG1HGUH0
darker: E (eq: True, dd: None), confidence: 2, worker: A106BTOUPN1KRV
(0: guessing, 1: probably, 2: definitely)