The Google Ads Google+ account and Jon Diorio from the Google AdWords team announced a new small but useful feature available in the Google AdWords console for advertisers.
Now you can control the time aggregation on AdWords charts to show data by day, week, month, or quarter. This let’s you see trends clearer than you would by just looking at the data by day.
Google said:
Here is a picture of the options:
Here is a picture of the before and after:
Forum discussion at Google+.