Red point: darker
Green point: lighter
Blue point: equal
Darker point: 2
Darker reflectance: E
Darker method: C
Equal score: 0.135329456472
Darker point darker score: not computed since the judgement is "E"
darker: 2 (eq: False, dd: True), confidence: 1, worker: AW0K78T4I2T72
darker: 2 (eq: False, dd: True), confidence: 2, worker: A3S6JT56CCUSE2 (marked invalid)
darker: E (eq: True, dd: None), confidence: 2, worker: A10S23B6VB5G8M
darker: E (eq: True, dd: None), confidence: 2, worker: A1NZVXB0S8DR04
darker: 2 (eq: False, dd: True), confidence: 2, worker: A38TQC40K87G6I (marked invalid)
darker: E (eq: True, dd: None), confidence: 1, worker: A1PGQZ8N5QB4F4 (marked invalid)
darker: E (eq: True, dd: None), confidence: 2, worker: A3Q9S2K93W2KDI (marked invalid)
darker: E (eq: True, dd: None), confidence: 1, worker: A3RJ8NZQ8BRTZM (marked invalid)
darker: E (eq: True, dd: None), confidence: 1, worker: A1EY3KWGUA9A1N
darker: E (eq: True, dd: None), confidence: 2, worker: A5R9TAN5DI19I (marked invalid)
darker: E (eq: True, dd: None), confidence: 1, worker: A2A42CU48PN8CX
(0: guessing, 1: probably, 2: definitely)