Inspection of the raw data shows that rf_46 has a lot of different circuit labels:

• some have the form xx_Imag$nnn - these may be 'imaginary power'
• one is voltage (it says so!)
• some have the form xx1$nnn or xx2$nnn - these may or may not be power, imaginary power or voltage
• some are 'normal'

rf_46 was not re-used and the similarity of the label-sets seems to indicate typos.