It is the work of a moment to adjust the source code to send your data to any server you like. The server can be as simple as a few lines of Python to catch the JSON data and archive it.
The simplest format is to send JSON data like the system does anyway, just change the URL it sends to. From there, you can accumulate the data and present it any way you like. I keep my historical data in parquet format on a Pi4. YMMV.
The simplest format is to send JSON data like the system does anyway, just change the URL it sends to. From there, you can accumulate the data and present it any way you like. I keep my historical data in parquet format on a Pi4. YMMV.