Red point: darker
Green point: lighter
Blue point: equal
Darker point: 2
Darker reflectance: E
Darker method: C
Equal score: 0.992475868477
Darker point darker score: not computed since the judgement is "E"
darker: E (eq: True, dd: None), confidence: 2, worker: A21SF3IKIZB0VN
darker: E (eq: True, dd: None), confidence: 2, worker: A1W02OZN6J9J0H
darker: E (eq: True, dd: None), confidence: 2, worker: A3FVPDNQQLDFZH
darker: 2 (eq: False, dd: True), confidence: 2, worker: A1PRVVISZ1C6CQ (marked invalid)
darker: E (eq: True, dd: None), confidence: 2, worker: A234WZ4KX8IW07
darker: 2 (eq: False, dd: True), confidence: 2, worker: AP29T5XPOQKG2 (marked invalid)
darker: E (eq: True, dd: None), confidence: 2, worker: A1JHVZIC3FH9LG
(0: guessing, 1: probably, 2: definitely)