Red point: darker
Green point: lighter
Blue point: equal
Darker point: 1
Darker reflectance: E
Darker method: C
Equal score: 0.142369541202
Darker point darker score: not computed since the judgement is "E"
darker: 1 (eq: False, dd: True), confidence: 2, worker: A3QTG4DHHV2KD6
darker: 1 (eq: False, dd: True), confidence: 0, worker: A14BFNH96MJQH
darker: 1 (eq: False, dd: True), confidence: 2, worker: A39SAJGZKMYJE9 (marked invalid)
darker: E (eq: True, dd: None), confidence: 0, worker: A258PTOZ3D2TQR
darker: E (eq: True, dd: None), confidence: 2, worker: A3RZMD0GPKZBJ5
darker: E (eq: True, dd: None), confidence: 1, worker: AMDW925P9IY2O
(0: guessing, 1: probably, 2: definitely)