Red point: darker
Green point: lighter
Blue point: equal
Darker point: 1
Darker reflectance: E
Darker method: C
Equal score: 1.23930050266
Darker point darker score: not computed since the judgement is "E"
darker: E (eq: True, dd: None), confidence: 2, worker: A2ZVWE8XJDWNAD
darker: 2 (eq: False, dd: False), confidence: 1, worker: A1ZGOZQF2VZ0X9 (marked invalid)
darker: E (eq: True, dd: None), confidence: 2, worker: AHLVAVDNE9WI0
darker: E (eq: True, dd: None), confidence: 2, worker: A1R2MU0C4REIEF
darker: E (eq: True, dd: None), confidence: 2, worker: A1IOJ2LGMGISYM
darker: E (eq: True, dd: None), confidence: 2, worker: A2VVSQ1PSXKGVE
darker: E (eq: True, dd: None), confidence: 2, worker: A3Q9S2K93W2KDI (marked invalid)
(0: guessing, 1: probably, 2: definitely)