Red point: darker
Green point: lighter
Blue point: equal
Darker point: 2
Darker reflectance: E
Darker method: C
Equal score: 0.120641610991
Darker point darker score: not computed since the judgement is "E"
darker: 1 (eq: False, dd: False), confidence: 2, worker: A3FRJKOYCI9Q53
darker: 2 (eq: False, dd: True), confidence: 2, worker: A2XU16B4I9XQG5 (marked invalid)
darker: E (eq: True, dd: None), confidence: 1, worker: A26N0ZAW34UJUV
darker: 1 (eq: False, dd: False), confidence: 2, worker: A7S0IDTDA59QN
darker: E (eq: True, dd: None), confidence: 2, worker: A3163PFOUKXQKA
darker: E (eq: True, dd: None), confidence: 2, worker: A1NX9Q0EAOPYN3
(0: guessing, 1: probably, 2: definitely)