Red point: darker
Green point: lighter
Blue point: equal
Darker point: 2
Darker reflectance: E
Darker method: C
Equal score: 0.884896850035
Darker point darker score: not computed since the judgement is "E"
darker: 2 (eq: False, dd: True), confidence: 2, worker: A1JF9ZNXWK5QZU (marked invalid)
darker: 1 (eq: False, dd: False), confidence: 2, worker: AWL4VD8C90KJR (marked invalid)
darker: E (eq: True, dd: None), confidence: 2, worker: AGQOUDGB4N87B
darker: E (eq: True, dd: None), confidence: 2, worker: A92IZM4P9SJ2S
darker: E (eq: True, dd: None), confidence: 2, worker: A3B7AUU8YUZ4PZ (marked invalid)
darker: E (eq: True, dd: None), confidence: 2, worker: A1FUQIDCR4U4QQ
darker: E (eq: True, dd: None), confidence: 2, worker: AAOTQL1SCAC03
darker: E (eq: True, dd: None), confidence: 2, worker: A2DTELFC4X0QJQ
(0: guessing, 1: probably, 2: definitely)