Is this supposed to work?

I installed the application/dashboard at the latest ([e7e2ec](https://github.com/aws-samples/ec2-spot-interruption-dashboard/commit/e7e2ecb1ad0a555b14f07435aa6dd92a6f7bb260)), following the `Packaging and Deployment` instructions, and everything went fine. Then, I launched a few spot instances to generate some data to show up in the **SpotInterruptionDashboard**.

It appears that the data isn't accurate by the hour (there seems to be a small offset somewhere), but that's no big deal at the moment.

However, while the `Overview` seems correct, the `Spot Interruption Counts - By Availability Zone` and `Spot Interruption Counts - By Instance Type` don't show **Availability Zone** and **Instance Type** as shown here:


The **Athena** saved query **SpotInterruptionCountByInstanceTypesPastDay** shows the following:


So, in the Dashboard, I would expect to see `us-east-1b` in **Spot Interruption Counts - By Availability Zone** and `t1.micro` in **Spot Interruption Counts - By Instance Type**.

I know this project/sample is relatively quiet now (GitHub activity), but I like the idea and metrics, and I would appreciate it if it could work as advertised. I'm not too versed here, but I try to understand why I don't get the expected... maybe I missed something, or there is a real bug. Anyway, thanks if you can help.