Red point: darker
Green point: lighter
Blue point: equal
Darker point: 2
Darker reflectance: E
Darker method: C
Equal score: 0.00407426293398
Darker point darker score: not computed since the judgement is "E"
darker: E (eq: True, dd: None), confidence: 1, worker: AGDDGSV1IQ0Z4
darker: 2 (eq: False, dd: True), confidence: 2, worker: AT9VZ94CAWNG
darker: 2 (eq: False, dd: True), confidence: 2, worker: A2AAWTFFL0ZXEK (marked invalid)
darker: 2 (eq: False, dd: True), confidence: 2, worker: AHLVAVDNE9WI0
darker: E (eq: True, dd: None), confidence: 2, worker: A2DNSD743W4OC2
darker: 2 (eq: False, dd: True), confidence: 2, worker: A3JJAFR9BRLG0
darker: 2 (eq: False, dd: True), confidence: 2, worker: A2H4ON6BUHMY1L (marked invalid)
(0: guessing, 1: probably, 2: definitely)