I looked at these when they first came out. I’ve gone back to look again and see what’s changed in the last few months. You can view the crime data for previous months!
You can also click on the types of crime and it highlights these.
This means you can look back at an area over time and build up an idea of what problems there are. It will help you avoid areas. They are a bit vague where they put the numbers though as to protect the identity of particular people, but they are fairly close.