Post-concussion syndrome. Post-concussion syndrome, also known as postconcussive syndrome or PCS, is a set of symptoms that may continue for weeks, months, or a year or more after a concussion â a mild form of traumatic brain injury (TBI).
The Equatorial (Celestial) Coordinate System. Equatorial coordinates, also called simply celestial coordinates, are the standard coordinate system for the sky. It is meant for the fixed sphere of the stars within which the Earth and Sun move.
Longitude: 118Â°11.3538â² W. All coordinates are given in the WGS 84 coordinate reference system. WGS 84 is the latest revision of the World Geodetic System, which is used in mapping and navigation, including GPS satellite navigation system (the Global Positioning System). Geographic coordinates (latitude and longitude) define a position on the Earth's surface. Coordinates are angular units. The canonical form of latitude and longitude representation uses degrees (Â°), minutes (â²), and seconds (â³). GPS systems widely use coordinates in degrees and decimal minutes, or in decimal degrees.