Red point: darker
Green point: lighter
Blue point: equal
Darker point: 1
Darker reflectance: E
Darker method: C
Equal score: 0.055291899547
Darker point darker score: not computed since the judgement is "E"
darker: E (eq: True, dd: None), confidence: 1, worker: AW0K78T4I2T72
darker: 2 (eq: False, dd: False), confidence: 0, worker: ABC27RCVTNR5C (marked invalid)
darker: 1 (eq: False, dd: True), confidence: 0, worker: A3I4NM85R4LN97
darker: 1 (eq: False, dd: True), confidence: 2, worker: A2FNC7KTCBF9IT
darker: 1 (eq: False, dd: True), confidence: 1, worker: AU4FF0366TBAR (marked invalid)
darker: 2 (eq: False, dd: False), confidence: 2, worker: A3RZMD0GPKZBJ5
darker: 2 (eq: False, dd: False), confidence: 2, worker: A1KH9UPH0D74QJ (marked invalid)
darker: E (eq: True, dd: None), confidence: 2, worker: A1CV8APDA7Y2PI
(0: guessing, 1: probably, 2: definitely)