When you look at the Garmin Connect web application, the data is available in the portal. Click reports, then Endurance Score. On the dashboard this would seem to almost be "tile ready" in that its already in a square format and there are current, 12 week, and 1 year views for this reporting element.
What gives? I've been using this as a proxy to general respiratory / cardio health and activity so I'd like to have it front and center on the web app dashboard - which I use as a homepage in my browser to help me stay motivated to keep moving and do active things.
