Red point: darker
Green point: lighter
Blue point: equal
Darker point: 2
Darker reflectance: E
Darker method: C
Equal score: 0.925809918706
Darker point darker score: not computed since the judgement is "E"
darker: 2 (eq: False, dd: True), confidence: 2, worker: A2XU16B4I9XQG5 (marked invalid)
darker: E (eq: True, dd: None), confidence: 0, worker: AYDW5LJOF8GF2
darker: E (eq: True, dd: None), confidence: 2, worker: AUJ3E2LEXUU10
darker: E (eq: True, dd: None), confidence: 2, worker: A1TM1ZFU4OIPTD
darker: E (eq: True, dd: None), confidence: 2, worker: ANE1T9B3JJAS5
darker: E (eq: True, dd: None), confidence: 2, worker: A1OA3O78YDXGZO
(0: guessing, 1: probably, 2: definitely)