Red point: darker
Green point: lighter
Blue point: equal
Darker point: 1
Darker reflectance: E
Darker method: A
Equal score: -0.0189058979815
Darker point darker score: not computed since the judgement is "E"
darker: E (eq: True, dd: None), confidence: 0, worker: A7YR8O19WNQCS
darker: E (eq: True, dd: None), confidence: 2, worker: A3ICG6AUFB4AT
darker: 1 (eq: False, dd: True), confidence: 2, worker: A3TVDFJ22T1FFN (marked invalid)
darker: E (eq: True, dd: None), confidence: 2, worker: AW0K78T4I2T72
darker: E (eq: True, dd: None), confidence: 2, worker: A92IZM4P9SJ2S
darker: 1 (eq: False, dd: True), confidence: 2, worker: A1JHVZIC3FH9LG
(0: guessing, 1: probably, 2: definitely)