Red point: darker
Green point: lighter
Blue point: equal
Darker point: 1
Darker reflectance: E
Darker method: C
Equal score: 0.231312567597
Darker point darker score: not computed since the judgement is "E"
darker: 1 (eq: False, dd: True), confidence: 1, worker: A1OTE7CRHWUOGJ (marked invalid)
darker: 2 (eq: False, dd: False), confidence: 0, worker: AY2CT54659MP
darker: E (eq: True, dd: None), confidence: 2, worker: A2C5CT4Y35F75B
darker: E (eq: True, dd: None), confidence: 2, worker: ASOOONBGQ48YI
darker: E (eq: True, dd: None), confidence: 2, worker: A2UFB6FRY90EAB
darker: E (eq: True, dd: None), confidence: 2, worker: A3UC4JITM1QD1M
(0: guessing, 1: probably, 2: definitely)