Red point: darker
Green point: lighter
Blue point: equal
Darker point: 1
Darker reflectance: E
Darker method: C
Equal score: 0.172384857249
Darker point darker score: not computed since the judgement is "E"
darker: 1 (eq: False, dd: True), confidence: 2, worker: A2AAWTFFL0ZXEK (marked invalid)
darker: E (eq: True, dd: None), confidence: 0, worker: A3IPKVTS5K06LP
darker: E (eq: True, dd: None), confidence: 1, worker: AQAKW9NW6Z61T
darker: 1 (eq: False, dd: True), confidence: 2, worker: AFO6OUDRVZ317
darker: E (eq: True, dd: None), confidence: 2, worker: ADPVKKFJ886DJ
darker: E (eq: True, dd: None), confidence: 2, worker: A1EY3KWGUA9A1N
(0: guessing, 1: probably, 2: definitely)