[Bifacial fraction affecting current]

I am working on a ground mount that uses bifacial modules, so presumably that will increase the current throughout the string of modules. What I am trying to find out is how much will the current be affected. Would this value be found in the Module Data sheet or PAN file, or does PVsyst spit out a value for this based on all the variables that affect energy coming from the back side of the module?

[Phi min max in report do not match orientation inputs]

I've been having a problem lately with the Phi min. and max. in the report not matching up with the degrees shown in the orientation and bifacial windows. I have selected ±52° for E/W trackers, but the report shows ±60°. See attachments.