Red point: darker
Green point: lighter
Blue point: equal
Darker point: 2
Darker reflectance: E
Darker method: C
Equal score: 0.903115463503
Darker point darker score: not computed since the judgement is "E"
darker: E (eq: True, dd: None), confidence: 2, worker: A3VQLIGEFIPKAP
darker: 1 (eq: False, dd: False), confidence: 0, worker: AKJ6IXN6XE7OQ (marked invalid)
darker: E (eq: True, dd: None), confidence: 2, worker: AW0K78T4I2T72
darker: 2 (eq: False, dd: True), confidence: 1, worker: A2KFG0H3IXPFM9 (marked invalid)
darker: E (eq: True, dd: None), confidence: 2, worker: A2FNC7KTCBF9IT
darker: E (eq: True, dd: None), confidence: 2, worker: A2A42CU48PN8CX
darker: E (eq: True, dd: None), confidence: 2, worker: A1K3QJM1Q770Y (marked invalid)
darker: E (eq: True, dd: None), confidence: 1, worker: AMDW925P9IY2O
darker: 2 (eq: False, dd: True), confidence: 2, worker: A2Q5IX1YGGLQML (marked invalid)
(0: guessing, 1: probably, 2: definitely)