UpTime Monitoring Outages/

The Uptime Monitoring that is enabled with Hummingbird, and visible via the dashboard is showing some very odd results. I need to know if this is a bug related to the reporting, plugin, or if all of these sites actually went down at the same times across the board.

They are spread out over 4 servers, 2 hosting companies and three different packages/hosting configurations. For all of them to go down at the same time leads me to believe that a common plugin is causing a resource issue, and unfortunately the only common plugin for these would be Yoast SEO, or WPMU plugins (Smush and Hummingbird).

Thank you for taking a peak at this, and letting me know what might be the culprit.