Red point: darker
Green point: lighter
Blue point: equal
Darker point: 1
Darker reflectance: E
Darker method: C
Equal score: 0.969148816493
Darker point darker score: not computed since the judgement is "E"
darker: 1 (eq: False, dd: True), confidence: 2, worker: A2LVDFUMN11HAS (marked invalid)
darker: E (eq: True, dd: None), confidence: 2, worker: A1H10UJNXTJDX4
darker: E (eq: True, dd: None), confidence: 1, worker: AMDW925P9IY2O
darker: E (eq: True, dd: None), confidence: 2, worker: A234WZ4KX8IW07
darker: E (eq: True, dd: None), confidence: 2, worker: A1IJ5RKJ4MD2AM (marked invalid)
darker: E (eq: True, dd: None), confidence: 2, worker: A3UC4JITM1QD1M
darker: E (eq: True, dd: None), confidence: 2, worker: A1MQPBGSL800TL
(0: guessing, 1: probably, 2: definitely)