Red point: darker
Green point: lighter
Blue point: equal
Darker point: 1
Darker reflectance: E
Darker method: C
Equal score: 0.25842717763
Darker point darker score: not computed since the judgement is "E"
darker: 1 (eq: False, dd: True), confidence: 2, worker: A3JSQQSFSORW59 (marked invalid)
darker: 1 (eq: False, dd: True), confidence: 1, worker: A2DCLU4B46AB1U
darker: E (eq: True, dd: None), confidence: 2, worker: A9Y1HKUEOOEPM
darker: E (eq: True, dd: None), confidence: 2, worker: A3U65EZ76A3HCN
darker: E (eq: True, dd: None), confidence: 2, worker: A1AXIY3LLO186R
darker: E (eq: True, dd: None), confidence: 2, worker: A3QW1C79IH4GOG
(0: guessing, 1: probably, 2: definitely)