Red point: darker
Green point: lighter
Blue point: equal
Darker point: 1
Darker reflectance: E
Darker method: C
Equal score: 0.734190969714
Darker point darker score: not computed since the judgement is "E"
darker: 1 (eq: False, dd: True), confidence: 2, worker: A1RU9BQLDZ1DSY (marked invalid)
darker: E (eq: True, dd: None), confidence: 2, worker: A3N5WNTN6T2F81
darker: 2 (eq: False, dd: False), confidence: 1, worker: A1ERG69NJPO0XP
darker: E (eq: True, dd: None), confidence: 2, worker: A1H10UJNXTJDX4
darker: 1 (eq: False, dd: True), confidence: 2, worker: A1KH9UPH0D74QJ (marked invalid)
darker: E (eq: True, dd: None), confidence: 2, worker: A2Q1A5H715C3EK
darker: E (eq: True, dd: None), confidence: 1, worker: A26N0ZAW34UJUV
(0: guessing, 1: probably, 2: definitely)