Red point: darker
Green point: lighter
Blue point: equal
Darker point: 2
Darker reflectance: E
Darker method: C
Equal score: 0.0618576384147
Darker point darker score: not computed since the judgement is "E"
darker: E (eq: True, dd: None), confidence: 1, worker: A1YQ4Z1018RM1R
darker: 1 (eq: False, dd: False), confidence: 2, worker: A2SP7LV6H5D0HO
darker: 1 (eq: False, dd: False), confidence: 2, worker: A1H30MGYWO1MWS (marked invalid)
darker: 1 (eq: False, dd: False), confidence: 1, worker: A1OA3O78YDXGZO
darker: E (eq: True, dd: None), confidence: 0, worker: A2VVSQ1PSXKGVE
darker: 2 (eq: False, dd: True), confidence: 2, worker: A3NUDHU0ZTFI8H (marked invalid)
darker: E (eq: True, dd: None), confidence: 2, worker: A1WRANKL1HRGYW
(0: guessing, 1: probably, 2: definitely)