Red point: darker
Green point: lighter
Blue point: equal
Darker point: 1
Darker reflectance: E
Darker method: C
Equal score: 0.0585065744409
Darker point darker score: not computed since the judgement is "E"
darker: 1 (eq: False, dd: True), confidence: 2, worker: A3HIIRTGJUJZ1D
darker: 1 (eq: False, dd: True), confidence: 2, worker: A1L3348HFKSWBJ (marked invalid)
darker: E (eq: True, dd: None), confidence: 1, worker: A258PTOZ3D2TQR
darker: 1 (eq: False, dd: True), confidence: 2, worker: A28GL1T0ED56TJ
darker: 1 (eq: False, dd: True), confidence: 2, worker: A2XU16B4I9XQG5 (marked invalid)
darker: E (eq: True, dd: None), confidence: 2, worker: A2ZRJMJTE6ID97
darker: E (eq: True, dd: None), confidence: 2, worker: A2VVSQ1PSXKGVE
(0: guessing, 1: probably, 2: definitely)