Red point: darker
Green point: lighter
Blue point: equal
Darker point: 1
Darker reflectance: E
Darker method: C
Equal score: 0.222547813631
Darker point darker score: not computed since the judgement is "E"
darker: E (eq: True, dd: None), confidence: 2, worker: A1N274L13ZKKI5
darker: 2 (eq: False, dd: False), confidence: 2, worker: A3B7AUU8YUZ4PZ (marked invalid)
darker: 1 (eq: False, dd: True), confidence: 2, worker: AH7WFV2TQYEW0 (marked invalid)
darker: E (eq: True, dd: None), confidence: 2, worker: A168LFJNV9DSTS
darker: E (eq: True, dd: None), confidence: 2, worker: A1OA3O78YDXGZO
darker: 2 (eq: False, dd: False), confidence: 2, worker: A3UN57EC5AXY1Z
darker: E (eq: True, dd: None), confidence: 2, worker: A3IXDTIS3GTW8K
(0: guessing, 1: probably, 2: definitely)