Red point: darker
Green point: lighter
Blue point: equal
Darker point: 2
Darker reflectance: E
Darker method: C
Equal score: 0.388494188679
Darker point darker score: not computed since the judgement is "E"
darker: E (eq: True, dd: None), confidence: 2, worker: A27H0BKXDPJ543
darker: E (eq: True, dd: None), confidence: 2, worker: A2QX30PEG8W87U
darker: 1 (eq: False, dd: False), confidence: 2, worker: A2C5N3IQEP0KWA (marked invalid)
darker: E (eq: True, dd: None), confidence: 2, worker: AOKJCDRWBS5MK
darker: E (eq: True, dd: None), confidence: 0, worker: A2KGL2FXIG2IQM (marked invalid)
darker: 2 (eq: False, dd: True), confidence: 2, worker: A1H10UJNXTJDX4
darker: E (eq: True, dd: None), confidence: 2, worker: AU4FF0366TBAR (marked invalid)
darker: E (eq: True, dd: None), confidence: 2, worker: A1D2E3QRL7O43T
(0: guessing, 1: probably, 2: definitely)