Red point: darker
Green point: lighter
Blue point: equal
Darker point: 1
Darker reflectance: E
Darker method: C
Equal score: 0.139738100506
Darker point darker score: not computed since the judgement is "E"
darker: 2 (eq: False, dd: False), confidence: 2, worker: A1NZVXB0S8DR04
darker: E (eq: True, dd: None), confidence: 1, worker: A1DRFDGG2KCOI2 (marked invalid)
darker: 2 (eq: False, dd: False), confidence: 2, worker: AQD91RFHV1WNE (marked invalid)
darker: 2 (eq: False, dd: False), confidence: 2, worker: A1RHI1ARUZZKGP
darker: E (eq: True, dd: None), confidence: 2, worker: A2VVSQ1PSXKGVE
darker: E (eq: True, dd: None), confidence: 2, worker: A39SAJGZKMYJE9 (marked invalid)
darker: E (eq: True, dd: None), confidence: 1, worker: A1NPKI9KKWOI2P
darker: E (eq: True, dd: None), confidence: 2, worker: A3B7AUU8YUZ4PZ (marked invalid)
darker: E (eq: True, dd: None), confidence: 2, worker: A1Z3RPPYNUUT0Z
darker: E (eq: True, dd: None), confidence: 2, worker: A2YYHNACJ8MFTU
(0: guessing, 1: probably, 2: definitely)