Red point: darker
Green point: lighter
Blue point: equal
Darker point: 1
Darker reflectance: E
Darker method: C
Equal score: 0.228398301453
Darker point darker score: not computed since the judgement is "E"
darker: E (eq: True, dd: None), confidence: 0, worker: AYJ67827HW8LL
darker: E (eq: True, dd: None), confidence: 2, worker: A2KJ983WWTEK4L
darker: 2 (eq: False, dd: False), confidence: 1, worker: A1AXIY3LLO186R
darker: E (eq: True, dd: None), confidence: 2, worker: AIKBREX7SEPXE
darker: E (eq: True, dd: None), confidence: 2, worker: A39SAJGZKMYJE9 (marked invalid)
darker: E (eq: True, dd: None), confidence: 2, worker: A23RB1Y4ANXQLS
(0: guessing, 1: probably, 2: definitely)