Weather Station

Functional Requirements

1. Collects data   
   +----------------------------------------------------------------------------+
   |   Data Unit             |  Unit of Measure    |     Level of Precision     |
   |----------------------------------------------------------------------------| 
   | Air temperature         |    Fahrenheit       |  To nearest whole degree.  |
   | Ground temperature      |    Fahrenheit       |  To nearest whole degree.  |
   | Wind speed              |       MPH           |  To nearest whole mile.    |
   | Wind direction          |     Degrees         |  To nearest whole degree.  |
   | Barometric pressure     |      Inches         |  To hundredths of an inch. |
   | Amount of precipitation |      Inches         |  To hundredths of an inch. |
   +----------------------------------------------------------------------------+

2. Summarizes data.  (Creates a table of latest data values when a request is received from 
the main computer.)
3. Transmits data to area computer in response to a request.  (Also sends a station ID, which 
identifies the location of the weather station that is used by the COTS forecasting system 
to identify weather patterns.)



Non-functional Requirements

1. Reliability  -Operates unattended (can be remotely located).
2. Performance  -Continuously collects and summarizes data
3. Security  -Communicates over a secure link with the area computer.