Red point: darker
Green point: lighter
Blue point: equal
Darker point: 1
Darker reflectance: E
Darker method: C
Equal score: 0.0239623084553
Darker point darker score: not computed since the judgement is "E"
darker: 1 (eq: False, dd: True), confidence: 2, worker: A3PEMQP28HYGHU
darker: 1 (eq: False, dd: True), confidence: 1, worker: A3TO9R1Z7L6PZZ (marked invalid)
darker: 1 (eq: False, dd: True), confidence: 1, worker: A3I4NM85R4LN97
darker: E (eq: True, dd: None), confidence: 2, worker: AX39A14MDLX5N
darker: 2 (eq: False, dd: False), confidence: 2, worker: AEHEZAYCPWF0E
darker: E (eq: True, dd: None), confidence: 1, worker: AEHEZAYCPWF0E
darker: 2 (eq: False, dd: False), confidence: 2, worker: A216863E5VMFSV (marked invalid)
(0: guessing, 1: probably, 2: definitely)