Red point: darker
Green point: lighter
Blue point: equal
Darker point: 1
Darker reflectance: E
Darker method: C
Equal score: 0.0770454477295
Darker point darker score: not computed since the judgement is "E"
darker: E (eq: True, dd: None), confidence: 1, worker: A2G053HOWRCZZ6 (marked invalid)
darker: 1 (eq: False, dd: True), confidence: 0, worker: A2OF0GTKWKM2T5
darker: E (eq: True, dd: None), confidence: 2, worker: A1AXIY3LLO186R
darker: 1 (eq: False, dd: True), confidence: 2, worker: AAOTQL1SCAC03
darker: 2 (eq: False, dd: False), confidence: 2, worker: A18WZ06GBK6FGZ (marked invalid)
darker: E (eq: True, dd: None), confidence: 2, worker: A3A45A5YUM61LK
darker: E (eq: True, dd: None), confidence: 2, worker: A2JVJ7J2MVGW9S
(0: guessing, 1: probably, 2: definitely)