^
To be more specific:
The first line is for how much renown you get just for going to the assigned grid.
The second line is for how much renown you get for patrolling there for the "required" 24 hours.
Goes without saying that you should make a backup copy of the "basic" basic.cfg in case you ever make a bad edit that gives you problems, or at the very least just as a reference.
If you use SH3 Commander you can also use the "Static Settings.cfg" file in its Cfg folder to make selected edits to the basic.cfg only when you launch the game via Commander (if you open the file, there are instructions on how to set it up right at the top). And if you have auto-rollback selected in the Commander options, it undoes the edits when you exit the game - so you always have the original file in place if you need to refer to it in between gaming sessions. That's become the only way I make those kinds of edits.