Times shown as a number of minutes are real time of arrival based on live data from the buses otherwise you are seeing timetable times which are less reliable.
These are times for the stop on the guided busway just off Milton Road on the south side of Cambridge Science Park and is for buses heading out of Cambridge toward St Ives including villages such as Histon. In the day time it’s accessible through the Science Park, and at all times via the busway access path.