About the AdSense Analytics Code
The AdSense Analytics Code (ASAC) is the additional snippet of code you must place in your webpage's HTML if you want to link your AdSense account to multiple properties within your Google Analytics account.
An example of the AdSense Analytics Code is shown below. The account number and property index fields will be automatically populated once you link your accounts.
<script> google_analytics_uacct = "UA-accountnumber-propertyindex"; </script>