Red point: darker
Green point: lighter
Blue point: equal
Darker point: 2
Darker reflectance: E
Darker method: C
Equal score: 0.269003228888
Darker point darker score: not computed since the judgement is "E"
darker: 2 (eq: False, dd: True), confidence: 2, worker: A1I4YHF7RG58DV
darker: E (eq: True, dd: None), confidence: 2, worker: A3JB8CDV1SF2TH
darker: E (eq: True, dd: None), confidence: 2, worker: A3JKYHQMKDV1Y9
darker: 2 (eq: False, dd: True), confidence: 2, worker: A1PRVVISZ1C6CQ (marked invalid)
darker: 2 (eq: False, dd: True), confidence: 1, worker: A21AVVEQUEX7DA (marked invalid)
darker: 2 (eq: False, dd: True), confidence: 0, worker: A3RJ8NZQ8BRTZM (marked invalid)
darker: E (eq: True, dd: None), confidence: 2, worker: A1N274L13ZKKI5
darker: E (eq: True, dd: None), confidence: 2, worker: A2VVSQ1PSXKGVE
(0: guessing, 1: probably, 2: definitely)