I have some GRIB2 data (for example here) that I'd like in a more mainstream file format like CSV or JSON. I have tried several of the open-source programs recommended on the Wikipedia page, but couldn't get any of them working. Is there a simpler way to do this? I don't need any other functionality; no visualization or anything else, just a simple conversion from GRIB to any human-readable format that I can further process myself.