Red point: darker
Green point: lighter
Blue point: equal
Darker point: 1
Darker reflectance: E
Darker method: C
Equal score: 1.21346666774
Darker point darker score: not computed since the judgement is "E"
darker: E (eq: True, dd: None), confidence: 0, worker: A2DTELFC4X0QJQ
darker: E (eq: True, dd: None), confidence: 2, worker: A1TQYQG3VFJTWW
darker: 1 (eq: False, dd: True), confidence: 1, worker: A1XX6ZVVS2UTO7 (marked invalid)
darker: E (eq: True, dd: None), confidence: 2, worker: A1N4JP7BSPNF95
darker: E (eq: True, dd: None), confidence: 2, worker: A2FQSVTAOL5GUC
darker: E (eq: True, dd: None), confidence: 2, worker: A2FNC7KTCBF9IT
(0: guessing, 1: probably, 2: definitely)