Catalog https://www.ncei.noaa.gov/thredds/catalog/model-srrs-grib/201304/20130421/catalog.html

Dataset	Size	Last Modified
`20130421`		`--`
`SRRS GRIB: 8 hour 3X Ozone Concentration : 2013-04-21 All Cycles & All forecasts`	`261.4 Mbytes`	`2013-04-25T07:43:00.366Z`
`SRRS GRIB: 1 hour 3X Ozone Concentration : 2013-04-21 All Cycles & All forecasts`	`281.1 Mbytes`	`2013-04-25T07:42:19.550Z`
`SRRS GRIB: 8 hour 5X Ozone Concentration : 2013-04-21 All Cycles & All forecasts`	`261.4 Mbytes`	`2013-04-25T07:41:35.596Z`
`SRRS GRIB: 1 hour 5X Ozone Concentration : 2013-04-21 All Cycles & All forecasts`	`281.9 Mbytes`	`2013-04-25T07:40:54.938Z`
`SRRS GRIB: Smoke : 2013-04-21 All Cycles & All forecasts`	`539.8 Mbytes`	`2013-04-25T07:40:10.874Z`
`SRRS GRIB: National Convective Weather Forecast : 2013-04-21 : All Times`	`182.7 Mbytes`	`2013-04-25T07:38:59.179Z`
`SRRS GRIB: 20 Km U.S. Current Icing Potential : 2013-04-21 All Cycles / All Vertical Levels / Analysis`	`239.5 Mbytes`	`2013-04-25T07:38:50.297Z`
`SRRS GRIB: 40 Km U.S. Current Icing Potential : 2013-04-21 All Cycles / All Vertical Levels / Analysis`	`60.76 Mbytes`	`2013-04-25T07:38:45.766Z`