WMM - World Magnetic Model

 

Latitude : degrees (- for S)
Longitude : degrees (- for W)
Altitude : kilometres AMSL
Date : / / : year/mm/dd hh:mm range 2010-2015
using above OR Select Location: OR each (millisecs)

 

 
 

Values given here can be checked at http://www.ngdc.noaa.gov/geomag-web/#declination