Red point: darker
Green point: lighter
Blue point: equal
Darker point: 1
Darker reflectance: E
Darker method: C
Equal score: 0.070864279689
Darker point darker score: not computed since the judgement is "E"
darker: E (eq: True, dd: None), confidence: 0, worker: A1E9VI5RSZI31F
darker: 1 (eq: False, dd: True), confidence: 0, worker: AIKBREX7SEPXE
darker: 1 (eq: False, dd: True), confidence: 0, worker: A2EPRPJA681I8X
darker: 1 (eq: False, dd: True), confidence: 2, worker: A1I4YHF7RG58DV
darker: 1 (eq: False, dd: True), confidence: 1, worker: A3TO9R1Z7L6PZZ (marked invalid)
darker: 2 (eq: False, dd: False), confidence: 2, worker: A2XU16B4I9XQG5 (marked invalid)
darker: E (eq: True, dd: None), confidence: 2, worker: A3760PCQD2MPIO
(0: guessing, 1: probably, 2: definitely)