The primary specification of the control point coordinates is degrees, minutes, and seconds Based in large part on the Avenal data. Always consult the relevant publications for current and correct information. This service is provided free of charge with no warrantees, expressed or implied.
User assumes all risk of use.
Use is subject to these conditions. Select for a description of the material. It may take a couple of days after a change has occured for this service of Netmind to notify you of the changes. Please contact John Leibacher with any suggestions concerning this material. If you have soaring related information that you would like to make available, please contact me at the email address below.