The BCM currents are calculated from the voltage readout. Using the OLO2 currents, the BCM currents are as follow:
BCM[current (uA)] = coefficient*BCM[Voltage (V)]+ Offset
BCM1(uA) = [98.35+/- 0.01953]*BCM1(V)+[-0.001548+/-0.006382]
BCM2(uA) = [82.35+/-0.0193]*BCM2(V)+[-0.02296+/-0.007532]
The offset of the voltages when there is no current are: BCM1(V0) = 0.0007356+/-6.427E-7 BCM2(V0) = 0.0002807+/-2.435E-7
Figure 1