. . "The geographic longitude (in decimal degrees, using the spatial reference system given in geodeticDatum) of the geographic center of a Location. Positive values are east of the Greenwich Meridian, negative values are west of it. Legal values lie between -180 and 180, inclusive."@en . . . "Decimal Longitude"@en . "2009-07-06" . "recommended" . "DataSets/DataSet/Units/Unit/Gathering/SiteCoordinateSets/SiteCoordinates/CoordinatesLatLon/LongitudeDecimal" . "2008-11-19" . . "Example: \"-121.1761111\""@en .