An EPG retrieval system includes a data server, a client, and a dictionary database. The fluid samples are received within a degassing cylinder and separated into a liquid phase and a gas phase, with the liquid phase automatically transferred to a sampling cylinder for water cut analysis. A reception side data processing apparatus sequentially executes a reception process for a received frame, in accordance with the order information derived from each received frame. One or more curved surfaces may be employed on the rear lens to provide a shadow effect. These first and second loads are then combined, converted to travel times, and scaled to facilitate the identification of a best or fastest route.