Red point: darker
Green point: lighter
Blue point: equal
Darker point: 1
Darker reflectance: E
Darker method: C
Equal score: 0.273005908351
Darker point darker score: not computed since the judgement is "E"
darker: 1 (eq: False, dd: True), confidence: 2, worker: A25R3HUN514JKX (marked invalid)
darker: 1 (eq: False, dd: True), confidence: 0, worker: APQU1QQ738JV9
darker: E (eq: True, dd: None), confidence: 0, worker: A1DJDJMSZTDQRF
darker: E (eq: True, dd: None), confidence: 1, worker: A1KF93C9NTOP42
darker: E (eq: True, dd: None), confidence: 2, worker: AET2U31SXUAPM
darker: E (eq: True, dd: None), confidence: 2, worker: A3PX16PNFHQ5OK
(0: guessing, 1: probably, 2: definitely)