The tables give the normals for maximum and minimum temperatures based on weather data collected from 1981 to 2010 by the US National Climatic Data Center. You can jump to a separate table for each region of the state: Eastern Shore, Central Maryland and Western Maryland.
A computer application is simply another word for a computer program or an executable file. Examples would be games, word processors (such as Microsoft Word), and media players.
Network applications use a client-server architecture, where the client and server are two computers connected to the network. The server is programmed to provide some service to the client. The client is typically a desktop, laptop or portable device like an Apple iPhone.