Red point: darker
Green point: lighter
Blue point: equal
Darker point: 1
Darker reflectance: E
Darker method: C
Equal score: 0.026812806634
Darker point darker score: not computed since the judgement is "E"
darker: 1 (eq: False, dd: True), confidence: 0, worker: A2LT5VXO2LS0UL
darker: 2 (eq: False, dd: False), confidence: 2, worker: A1FQ1XLPXHS3LX
darker: 2 (eq: False, dd: False), confidence: 2, worker: A2C1Z52F4B0CG1 (marked invalid)
darker: E (eq: True, dd: None), confidence: 2, worker: A11KMASRERFP0V
darker: E (eq: True, dd: None), confidence: 2, worker: A2DNSD743W4OC2
darker: E (eq: True, dd: None), confidence: 2, worker: AMDW925P9IY2O
(0: guessing, 1: probably, 2: definitely)