Red point: darker
Green point: lighter
Blue point: equal
Darker point: 1
Darker reflectance: E
Darker method: C
Equal score: 0.980278725952
Darker point darker score: not computed since the judgement is "E"
darker: 2 (eq: False, dd: False), confidence: 1, worker: AR50UBGSH10FJ (marked invalid)
darker: E (eq: True, dd: None), confidence: 2, worker: AY2CT54659MP
darker: E (eq: True, dd: None), confidence: 2, worker: A2631BM7J7H37K
darker: E (eq: True, dd: None), confidence: 2, worker: A3760PCQD2MPIO
darker: E (eq: True, dd: None), confidence: 2, worker: A39SAJGZKMYJE9 (marked invalid)
darker: E (eq: True, dd: None), confidence: 2, worker: A2B8L88BUHVOO6
darker: E (eq: True, dd: None), confidence: 2, worker: A1NX9Q0EAOPYN3
darker: E (eq: True, dd: None), confidence: 2, worker: A3Q9S2K93W2KDI (marked invalid)
(0: guessing, 1: probably, 2: definitely)