An option worth considering for those doing data logging is Influxdb and Grafana as the server/viewer.
I did a bit of research and came up with it, because it's pretty much designed for what we're doing (well it's actually very popular for collecting metrics on server farms.)
I've got it running on a raspberry pi, as there's binaries available for the Arm install is fairly quick and painless.
Grafana is a web server that gives you the ability to build dashboards of views into time series data. The screen capture below is my initial dashboard with just a single graph, but if you look on the web there's some pretty impressive stuff.