Red point: darker
Green point: lighter
Blue point: equal
Darker point: 1
Darker reflectance: E
Darker method: C
Equal score: 0.092617994781
Darker point darker score: not computed since the judgement is "E"
darker: 1 (eq: False, dd: True), confidence: 1, worker: A2KGFKD1S21AZA
darker: E (eq: True, dd: None), confidence: 0, worker: A1NQZHW4RY6IDR
darker: 1 (eq: False, dd: True), confidence: 1, worker: A1H10UJNXTJDX4
darker: 1 (eq: False, dd: True), confidence: 0, worker: A2H4ON6BUHMY1L (marked invalid)
darker: E (eq: True, dd: None), confidence: 2, worker: A3UC4JITM1QD1M
darker: E (eq: True, dd: None), confidence: 2, worker: AYD3RXE17K2CF
(0: guessing, 1: probably, 2: definitely)