Catalog https://www.ncei.noaa.gov/thredds/catalog/model-srrs-grib/201712/20171221/catalog.html

Dataset	Size	Last Modified
`20171221`		`--`
`SRRS GRIB: 8 hour 3X Ozone Concentration : 2017-12-21 All Cycles & All forecasts`	`130.4 Mbytes`	`2017-12-28T09:04:26.408Z`
`SRRS GRIB: 1 hour 3X Ozone Concentration : 2017-12-21 All Cycles & All forecasts`	`5.213 Mbytes`	`2017-12-28T09:03:50.188Z`
`SRRS GRIB: 8 hour 5X Ozone Concentration : 2017-12-21 All Cycles & All forecasts`	`110.2 Mbytes`	`2017-12-28T09:03:48.682Z`
`SRRS GRIB: 1 hour 5X Ozone Concentration : 2017-12-21 All Cycles & All forecasts`	`118.5 Mbytes`	`2017-12-28T09:02:46.362Z`
`SRRS GRIB: Smoke : 2017-12-21 All Cycles & All forecasts`	`299.4 Mbytes`	`2017-12-28T09:02:03.668Z`
`SRRS GRIB: National Convective Weather Forecast : 2017-12-21 : All Times`	`65.17 Mbytes`	`2017-12-28T08:56:51.360Z`
`SRRS GRIB: 20 Km U.S. Current Icing Potential : 2017-12-21 All Cycles / All Vertical Levels / Analysis`	`16.76 Mbytes`	`2017-12-28T08:56:41.077Z`