Red point: darker
Green point: lighter
Blue point: equal
Darker point: 1
Darker reflectance: E
Darker method: C
Equal score: 0.435965865343
Darker point darker score: not computed since the judgement is "E"
darker: E (eq: True, dd: None), confidence: 0, worker: A1CE5G48ELWN0F
darker: 2 (eq: False, dd: False), confidence: 2, worker: A2BG6O1B5B3F78
darker: 2 (eq: False, dd: False), confidence: 1, worker: A3UZV2WVMQO4Q9 (marked invalid)
darker: 1 (eq: False, dd: True), confidence: 2, worker: AY4PUTE2I6K3C (marked invalid)
darker: E (eq: True, dd: None), confidence: 2, worker: A1DDY93NB8NESD
darker: E (eq: True, dd: None), confidence: 1, worker: A1JEDFDBWHLA1F
darker: E (eq: True, dd: None), confidence: 2, worker: A1IOJ2LGMGISYM
(0: guessing, 1: probably, 2: definitely)