Red point: darker
Green point: lighter
Blue point: equal
Darker point: 1
Darker reflectance: E
Darker method: C
Equal score: 0.982718405763
Darker point darker score: not computed since the judgement is "E"
darker: E (eq: True, dd: None), confidence: 1, worker: A3RLTUXIM8TU3K (marked invalid)
darker: E (eq: True, dd: None), confidence: 2, worker: AI0LPDLUHKFMT (marked invalid)
darker: E (eq: True, dd: None), confidence: 1, worker: A167L9XCC3KHPF
darker: E (eq: True, dd: None), confidence: 2, worker: A1R2MU0C4REIEF
darker: E (eq: True, dd: None), confidence: 2, worker: A3F813T7DKLBKP
darker: E (eq: True, dd: None), confidence: 2, worker: A39SAJGZKMYJE9 (marked invalid)
darker: E (eq: True, dd: None), confidence: 2, worker: A2DTELFC4X0QJQ
darker: E (eq: True, dd: None), confidence: 2, worker: A1IOJ2LGMGISYM
(0: guessing, 1: probably, 2: definitely)