Red point: darker
Green point: lighter
Blue point: equal
Darker point: 1
Darker reflectance: E
Darker method: C
Equal score: 0.201745414811
Darker point darker score: not computed since the judgement is "E"
darker: 1 (eq: False, dd: True), confidence: 2, worker: A5A5THR7ITRBA
darker: 1 (eq: False, dd: True), confidence: 1, worker: A11GWWAXRJQ6Y2 (marked invalid)
darker: E (eq: True, dd: None), confidence: 1, worker: ASOOONBGQ48YI
darker: E (eq: True, dd: None), confidence: 2, worker: A32M5FDKCPHMA
darker: E (eq: True, dd: None), confidence: 2, worker: A3163PFOUKXQKA
darker: E (eq: True, dd: None), confidence: 1, worker: A277RSAE4AKWW0
(0: guessing, 1: probably, 2: definitely)