MT data is stored in the Meraki cloud and available through the dashboard for 1 year and you can view up to any 30 days at a time.  As for the gap, if you mean in coverage then make sure that an MV camera or MR access point (Wifi5 wave2 or newer) is nearby and in the same dashboard network.  The sensor will tell you the signal strength for any MRs or MVs it can see and the last time it communicated with them. ... View more