Red point: darker
Green point: lighter
Blue point: equal
Darker point: 2
Darker reflectance: E
Darker method: C
Equal score: 0.138692638421
Darker point darker score: not computed since the judgement is "E"
darker: 1 (eq: False, dd: False), confidence: 0, worker: A3B7AUU8YUZ4PZ (marked invalid)
darker: E (eq: True, dd: None), confidence: 2, worker: AWO91BEOHNOJB
darker: E (eq: True, dd: None), confidence: 0, worker: A18YH2N9M2P95T (marked invalid)
darker: E (eq: True, dd: None), confidence: 1, worker: A3JB8CDV1SF2TH
darker: 1 (eq: False, dd: False), confidence: 2, worker: A3163PFOUKXQKA
darker: 1 (eq: False, dd: False), confidence: 1, worker: A234WZ4KX8IW07
darker: E (eq: True, dd: None), confidence: 2, worker: A2UFB6FRY90EAB
(0: guessing, 1: probably, 2: definitely)