I’ll take a look at that. The graph module that I use is adapted from the open-source graph module in emoncms. It has been modified to use the IoTaWatt API and to use that API asynchronously. Since then, the emon version has been changed extensively, so this is definitely a unique fork.
With this release, I switched to loading the JQuery and graph code from a CDN. Apparently the version that I am now using does not support that. I’ll try to find one that does. In the meantime, I’m sure you found the “+” key at the top to zoom.
Let me know if you have questions about the derived reference three phase.