Red point: darker
Green point: lighter
Blue point: equal
Darker point: 2
Darker reflectance: E
Darker method: C
Equal score: 0.210897740901
Darker point darker score: not computed since the judgement is "E"
darker: 2 (eq: False, dd: True), confidence: 2, worker: A1IJ5RKJ4MD2AM (marked invalid)
darker: 2 (eq: False, dd: True), confidence: 2, worker: A1PRVVISZ1C6CQ (marked invalid)
darker: E (eq: True, dd: None), confidence: 2, worker: A3IIE0ASFPHDBN
darker: E (eq: True, dd: None), confidence: 2, worker: A3Q2HC4T5MHY93
darker: E (eq: True, dd: None), confidence: 1, worker: A3FVPDNQQLDFZH
darker: 2 (eq: False, dd: True), confidence: 2, worker: A21AVVEQUEX7DA (marked invalid)
darker: E (eq: True, dd: None), confidence: 1, worker: A1PGQZ8N5QB4F4 (marked invalid)
darker: 2 (eq: False, dd: True), confidence: 2, worker: A2FNC7KTCBF9IT
darker: E (eq: True, dd: None), confidence: 2, worker: A3IPKVTS5K06LP
(0: guessing, 1: probably, 2: definitely)