Red point: darker
Green point: lighter
Blue point: equal
Darker point: 1
Darker reflectance: E
Darker method: C
Equal score: 0.882672973686
Darker point darker score: not computed since the judgement is "E"
darker: 1 (eq: False, dd: True), confidence: 2, worker: A3B7AUU8YUZ4PZ (marked invalid)
darker: E (eq: True, dd: None), confidence: 2, worker: A14S7A62C87LTI
darker: E (eq: True, dd: None), confidence: 2, worker: AUD3A4YDWWZCY (marked invalid)
darker: E (eq: True, dd: None), confidence: 2, worker: A1IOJ2LGMGISYM
darker: E (eq: True, dd: None), confidence: 2, worker: A2A1D52ZPSW6L9
darker: E (eq: True, dd: None), confidence: 2, worker: AU4FF0366TBAR (marked invalid)
darker: E (eq: True, dd: None), confidence: 2, worker: A3A45A5YUM61LK
darker: E (eq: True, dd: None), confidence: 2, worker: A1RDQFNF6LD25Z
(0: guessing, 1: probably, 2: definitely)