Red point: darker
Green point: lighter
Blue point: equal
Darker point: 1
Darker reflectance: E
Darker method: C
Equal score: 0.517170096521
Darker point darker score: not computed since the judgement is "E"
darker: 2 (eq: False, dd: False), confidence: 2, worker: A1DU0G52OTCO5K
darker: 2 (eq: False, dd: False), confidence: 0, worker: A2KFG0H3IXPFM9 (marked invalid)
darker: 2 (eq: False, dd: False), confidence: 1, worker: A360B58589TBUS (marked invalid)
darker: E (eq: True, dd: None), confidence: 2, worker: A1MQPBGSL800TL
darker: E (eq: True, dd: None), confidence: 2, worker: A3NBD6P0INJB4G
darker: E (eq: True, dd: None), confidence: 2, worker: A3NWQ0535HAXUD
darker: E (eq: True, dd: None), confidence: 2, worker: A2CXAWVGQ6QQ2V
(0: guessing, 1: probably, 2: definitely)