Red point: darker
Green point: lighter
Blue point: equal
Darker point: 1
Darker reflectance: E
Darker method: C
Equal score: 0.125066616142
Darker point darker score: not computed since the judgement is "E"
darker: 1 (eq: False, dd: True), confidence: 1, worker: A1NO4LG6KGOGFD
darker: 1 (eq: False, dd: True), confidence: 1, worker: A99AY0L2AL77T
darker: E (eq: True, dd: None), confidence: 1, worker: A1JXSZBH58QL8O
darker: 1 (eq: False, dd: True), confidence: 0, worker: A3A1NOWBA4ULQA (marked invalid)
darker: E (eq: True, dd: None), confidence: 2, worker: A3163PFOUKXQKA
darker: E (eq: True, dd: None), confidence: 2, worker: A237FGJCPV99GJ
(0: guessing, 1: probably, 2: definitely)