Hi HN, this is a little pet project we created over the last couple of weeks. We created "Software EKG" a while back as an internal tool to analyze large amounts of time series data collected on production systems. This was before things like Prometheus and Grafana existed and it proved to be a valuable tool in our belt when we had to hunt down performance issues and relate different metrics like harddisk I/O and request latency in our application.
This adjusted version automatically downloads COVID-19 data from OWID. Feedback welcome.