Red point: darker
Green point: lighter
Blue point: equal
Darker point: 2
Darker reflectance: E
Darker method: C
Equal score: 0.640048297749
Darker point darker score: not computed since the judgement is "E"
darker: 2 (eq: False, dd: True), confidence: 2, worker: A1ERG69NJPO0XP
darker: E (eq: True, dd: None), confidence: 0, worker: AE6N096CSI5HT
darker: E (eq: True, dd: None), confidence: 2, worker: A3IPKVTS5K06LP
darker: E (eq: True, dd: None), confidence: 2, worker: A9Y1HKUEOOEPM
darker: E (eq: True, dd: None), confidence: 1, worker: A1WVOW92WZG8HP (marked invalid)
darker: E (eq: True, dd: None), confidence: 2, worker: A2JVJ7J2MVGW9S
(0: guessing, 1: probably, 2: definitely)