The format of the result file is the same for free trials and paid accounts.
It  is in csv format.First you must determine which application is opening the file.
If Excel is opening it, it will automatically reformat it into a spreadsheet. When it does this, it may mess-up the column lengths, so you'll have to make some of the columns longer to be able to see the data properly.

If Notepad is opening it, you should see the fields in each line of results
separated by commas.

If you want to select which application opens it, then right-click on the
link to the file, choose "Save target as", save the file onto your computer,
right click on the saved file, choose "Open With",  and then select the
application you want to use to open the file.