Red point: darker
Green point: lighter
Blue point: equal
Darker point: 2
Darker reflectance: E
Darker method: C
Equal score: 0.147271515759
Darker point darker score: not computed since the judgement is "E"
darker: 2 (eq: False, dd: True), confidence: 1, worker: ARX78WUC6UXWB
darker: 1 (eq: False, dd: False), confidence: 0, worker: A3TVDFJ22T1FFN (marked invalid)
darker: E (eq: True, dd: None), confidence: 1, worker: A2BERSBTHBGR6E
darker: 2 (eq: False, dd: True), confidence: 2, worker: A2Q1A5H715C3EK
darker: E (eq: True, dd: None), confidence: 2, worker: AX39A14MDLX5N
darker: 2 (eq: False, dd: True), confidence: 2, worker: A3S6JT56CCUSE2 (marked invalid)
darker: E (eq: True, dd: None), confidence: 2, worker: A2A42CU48PN8CX
darker: 2 (eq: False, dd: True), confidence: 2, worker: A216863E5VMFSV (marked invalid)
(0: guessing, 1: probably, 2: definitely)