Red point: darker
Green point: lighter
Blue point: equal
Darker point: 1
Darker reflectance: E
Darker method: C
Equal score: 0.949788557521
Darker point darker score: not computed since the judgement is "E"
darker: 1 (eq: False, dd: True), confidence: 2, worker: ATPCAF2RU1G4C (marked invalid)
darker: E (eq: True, dd: None), confidence: 2, worker: A2LT5VXO2LS0UL
darker: E (eq: True, dd: None), confidence: 2, worker: A3Q9S2K93W2KDI (marked invalid)
darker: E (eq: True, dd: None), confidence: 2, worker: A3FVPDNQQLDFZH
darker: E (eq: True, dd: None), confidence: 2, worker: A1NZVXB0S8DR04
darker: E (eq: True, dd: None), confidence: 2, worker: A1NF6PELRKACS9
darker: E (eq: True, dd: None), confidence: 2, worker: AU4FF0366TBAR (marked invalid)
darker: E (eq: True, dd: None), confidence: 2, worker: A3O8YXPG1HGUH0
darker: 2 (eq: False, dd: False), confidence: 2, worker: AP29T5XPOQKG2 (marked invalid)
darker: 2 (eq: False, dd: False), confidence: 2, worker: AJSZEUBV1O00K (marked invalid)
(0: guessing, 1: probably, 2: definitely)