Red point: darker
Green point: lighter
Blue point: equal
Darker point: 1
Darker reflectance: E
Darker method: C
Equal score: 0.0130838760847
Darker point darker score: not computed since the judgement is "E"
darker: E (eq: True, dd: None), confidence: 1, worker: A1EY3KWGUA9A1N
darker: 2 (eq: False, dd: False), confidence: 1, worker: A1TKGFJSMVR2RP
darker: E (eq: True, dd: None), confidence: 1, worker: A1XX6ZVVS2UTO7 (marked invalid)
darker: 2 (eq: False, dd: False), confidence: 0, worker: A3Q2HC4T5MHY93
darker: E (eq: True, dd: None), confidence: 2, worker: A3QTG4DHHV2KD6
darker: E (eq: True, dd: None), confidence: 2, worker: A7S0IDTDA59QN
(0: guessing, 1: probably, 2: definitely)