Red point: darker
Green point: lighter
Blue point: equal
Darker point: 2
Darker reflectance: E
Darker method: C
Equal score: 0.00639163813128
Darker point darker score: not computed since the judgement is "E"
darker: 2 (eq: False, dd: True), confidence: 1, worker: A3N1F27UIGEOGI
darker: 2 (eq: False, dd: True), confidence: 2, worker: A2JVJ7J2MVGW9S
darker: 2 (eq: False, dd: True), confidence: 2, worker: AH7WFV2TQYEW0 (marked invalid)
darker: 2 (eq: False, dd: True), confidence: 2, worker: A1WRANKL1HRGYW
darker: E (eq: True, dd: None), confidence: 2, worker: A2CXAWVGQ6QQ2V
darker: 1 (eq: False, dd: False), confidence: 2, worker: A1D2E3QRL7O43T
(0: guessing, 1: probably, 2: definitely)