Red point: darker
Green point: lighter
Blue point: equal
Darker point: 2
Darker reflectance: E
Darker method: C
Equal score: 0.419061379556
Darker point darker score: not computed since the judgement is "E"
darker: 2 (eq: False, dd: True), confidence: 2, worker: ACXUUWF75RR6C
darker: E (eq: True, dd: None), confidence: 2, worker: A1AKY7UPWR53YH
darker: E (eq: True, dd: None), confidence: 2, worker: AH8FQGOADPCST (marked invalid)
darker: E (eq: True, dd: None), confidence: 2, worker: A2EKPA2DR5VSA8
darker: 2 (eq: False, dd: True), confidence: 2, worker: A3QJ53C8CUTJTS (marked invalid)
darker: E (eq: True, dd: None), confidence: 2, worker: ADPVKKFJ886DJ
darker: E (eq: True, dd: None), confidence: 2, worker: A32M5FDKCPHMA
darker: E (eq: True, dd: None), confidence: 2, worker: ALY6VKHUADU6F
darker: E (eq: True, dd: None), confidence: 2, worker: A3B7AUU8YUZ4PZ (marked invalid)
darker: E (eq: True, dd: None), confidence: 2, worker: A15XHPD9NN0LU2
(0: guessing, 1: probably, 2: definitely)