Red point: darker
Green point: lighter
Blue point: equal
Darker point: 1
Darker reflectance: E
Darker method: C
Equal score: 0.295099930341
Darker point darker score: not computed since the judgement is "E"
darker: 1 (eq: False, dd: True), confidence: 2, worker: A3N6C8962TXPVH
darker: 2 (eq: False, dd: False), confidence: 2, worker: A1O61JHO0LUZRI (marked invalid)
darker: 1 (eq: False, dd: True), confidence: 2, worker: ATWGPR2A3M7WU (marked invalid)
darker: 1 (eq: False, dd: True), confidence: 2, worker: A30M7MYW1BHQN1
darker: 2 (eq: False, dd: False), confidence: 2, worker: A2EY9GDVA7L8YM (marked invalid)
darker: E (eq: True, dd: None), confidence: 0, worker: A14BFNH96MJQH
darker: E (eq: True, dd: None), confidence: 1, worker: A3RNCUQDU5AVEI
darker: 2 (eq: False, dd: False), confidence: 2, worker: AJSZEUBV1O00K (marked invalid)
darker: E (eq: True, dd: None), confidence: 2, worker: A3163PFOUKXQKA
(0: guessing, 1: probably, 2: definitely)