Red point: darker
Green point: lighter
Blue point: equal
Darker point: 2
Darker reflectance: E
Darker method: C
Equal score: 1.07379487572
Darker point darker score: not computed since the judgement is "E"
darker: 2 (eq: False, dd: True), confidence: 2, worker: A1L3348HFKSWBJ (marked invalid)
darker: E (eq: True, dd: None), confidence: 2, worker: A2KGL2FXIG2IQM (marked invalid)
darker: E (eq: True, dd: None), confidence: 0, worker: A19JD78JJXEW01
darker: E (eq: True, dd: None), confidence: 2, worker: AIOZSJB0O6OSQ
darker: E (eq: True, dd: None), confidence: 2, worker: AOKJCDRWBS5MK
darker: E (eq: True, dd: None), confidence: 2, worker: A1MQPBGSL800TL
darker: E (eq: True, dd: None), confidence: 2, worker: A1I4YHF7RG58DV
(0: guessing, 1: probably, 2: definitely)