Mars Quadrangles

Mars is divided into 30 quadrangles, or regions.
 * Latitude 90° to 0° corresponds to 90N to 0N in game (northern hemisphere)
 * Latitude 0° to -90° corresponds to 0N to 90S in game (southern hemisphere)
 * Longitude 0° to 180° corresponds to 0W to 180W (western hemisphere)
 * Longitude 180° to 360° corresponds to 0W to 179E (eastern hemisphere)