Hi @RafaelDanelon,
The Historical device data on the Access Point summary page is about the real-time connectivity status with options to preview up to last month only. I am not sure if Meraki will be adding a custom range feature for this but definitely I am also interested on that.
As far as I know, there is no way to download the historical device data for now. But what you can do is to register or enroll your Meraki device on an NMS or monitoring tool wherein it can give you the data that you are looking for. If you have also knowledge with API it would also be a great way to capture the data you need.
Maybe some of our friends here in the community has other ways 🙂
Thanks
Terry
Terry VASQUEZ Jr.