This tutorial shows how to add Google Analytics tracking code into your Gantry5’s based themes/templates. In order to generate a Tracking ID, you should log in to the Google Analytics website at http://www.google.com/analytics/ using your Google account. After that, you need to generate Google Analytics tracking code.
The code looks like on the screenshot below.
Go to template settings -> select Based Outline -> tab Page Settings
Scroll down and Add new Custom Css/Js atom -> new js item
And past the js code here
Now just save and you can see the Google Analytics tracking code like this