Chalk me up to that too. And my brother. Originally I'd used Ping Plotter. When I went 100% Linux I stopped using that. My brother ended up putting together a Grafana board tied to influxdb & infping and monitors several friend and family internet connections complete with alerts.
Here [0] is a screenshot of the Comcast cable connection from a year and a half ago. I have since switched to AT&T gigabit fiber. Here [1] is a screenshot from today.