Red point: darker
Green point: lighter
Blue point: equal
Darker point: 2
Darker reflectance: E
Darker method: C
Equal score: 0.99110435905
Darker point darker score: not computed since the judgement is "E"
darker: 2 (eq: False, dd: True), confidence: 2, worker: A1XA2WJ50VR7KQ (marked invalid)
darker: E (eq: True, dd: None), confidence: 2, worker: A2631BM7J7H37K
darker: E (eq: True, dd: None), confidence: 2, worker: A3799NWTIYKCEV
darker: E (eq: True, dd: None), confidence: 2, worker: A1AKY7UPWR53YH
darker: E (eq: True, dd: None), confidence: 2, worker: A251KVXCS8E3C
darker: 2 (eq: False, dd: True), confidence: 1, worker: A2G053HOWRCZZ6 (marked invalid)
darker: E (eq: True, dd: None), confidence: 2, worker: A1MQPBGSL800TL
(0: guessing, 1: probably, 2: definitely)