When you download your purchased file, it will be in a format called Comma-Separated Values (CSV). This just means that the file is made up of lines of text that are fields separated by commas. It is a very common format and used by many types of software and databases.

The easiest thing to do when you first download your AggData is to open it in Microsoft Excel or some other spreadsheet program (a great free alternative can be found here). These programs will automatically recognize the file and parse through it, putting the data in rows and columns like any standard table you can use to manipulate, sort, or filter the data. You could also import the data into a database, upload it to your GPS unit, or print it out for later reference. We wanted to use the most basic format for the data, so you have the flexibility to do what you want with it.