Catalog https://www.ncei.noaa.gov/thredds/catalog/model/gfs_legacy.html

Dataset	Size	Last Modified
`Global Forecast System AVN 201 - 381km - file units/`		`--`
`Global Forecast System AVN 202 - 190km - file units/`		`--`
`Global Forecast System AVN 203 - 190km - file units/`		`--`
`Global Forecast System AVN 211 - 81km - file units/`		`--`
`Global Forecast System AVN 213 - 95km - file units/`		`--`
`Global Forecast System MRF 201 - 381km - file units/`		`--`
`Global Forecast System MRF 202 - 190km - file units/`		`--`
`Global Forecast System MRF 203 - 190km - file units/`		`--`
`Global Forecast System MRF 205 - 190km - file units/`		`--`