Red point: darker
Green point: lighter
Blue point: equal
Darker point: 2
Darker reflectance: E
Darker method: C
Equal score: 0.12403083669
Darker point darker score: not computed since the judgement is "E"
darker: E (eq: True, dd: None), confidence: 2, worker: A3163PFOUKXQKA
darker: 2 (eq: False, dd: True), confidence: 2, worker: A1H30MGYWO1MWS (marked invalid)
darker: E (eq: True, dd: None), confidence: 2, worker: AW0K78T4I2T72
darker: E (eq: True, dd: None), confidence: 0, worker: A1QXQBZE7ROQ4F
darker: 2 (eq: False, dd: True), confidence: 1, worker: A3HIIRTGJUJZ1D
darker: 2 (eq: False, dd: True), confidence: 2, worker: A39SAJGZKMYJE9 (marked invalid)
darker: 1 (eq: False, dd: False), confidence: 2, worker: A2Q5IX1YGGLQML (marked invalid)
darker: 2 (eq: False, dd: True), confidence: 2, worker: AJSZEUBV1O00K (marked invalid)
darker: E (eq: True, dd: None), confidence: 2, worker: A1JHVZIC3FH9LG
(0: guessing, 1: probably, 2: definitely)