NR newbie: How to access a csv file created in NR HA addon?

Im a newbie to NR but have created a number of flows for industrial Modbus devices (so not a complete newb). Ive created a CSV file with some of the datapoints from those Modbus controllers that i want to use in Excel.

How do I access the filesystem of the NR HA Addon to copy the resultant csv file that I copied so that I can massage it in Excel???