Red point: darker
Green point: lighter
Blue point: equal
Darker point: 2
Darker reflectance: E
Darker method: C
Equal score: 0.895743752957
Darker point darker score: not computed since the judgement is "E"
darker: E (eq: True, dd: None), confidence: 2, worker: A3I546VTF7B6YX
darker: 2 (eq: False, dd: True), confidence: 2, worker: A2C5N3IQEP0KWA (marked invalid)
darker: E (eq: True, dd: None), confidence: 2, worker: A1NX9Q0EAOPYN3
darker: E (eq: True, dd: None), confidence: 2, worker: A2MZLVT9DB9MGK
darker: E (eq: True, dd: None), confidence: 2, worker: A32M5FDKCPHMA
darker: E (eq: True, dd: None), confidence: 2, worker: A3LSDO3YPF1SFT
darker: E (eq: True, dd: None), confidence: 2, worker: A35Y9YHW91OY2U (marked invalid)
(0: guessing, 1: probably, 2: definitely)