Question: Extract the answer to the question from the following context. Question: In 2012, what was BeiDou-2's longitudinal range? Context: The BeiDou-2 system began offering services for the Asia-Pacific region in December 2012. At this time, the system could provide positioning data between longitude 55°E to 180°E and from latitude 55°S to 55°N.
Answer:
between longitude 55°E to 180°E