[Therion] Multiple fixes for the same point

[Andrew Atkinson]

I'm sure that this has been covered, but I cannot find it anywhere.

I have 3 different gps results for a surface point, all taken with the
same gps but on different days, so rather then picking one I just used
fix on all 3.

However, therion appears to be taking only the last one I enter.
This does not seem to be the right behaviour! Is there a way for Therion
to take all 3 and 'average' them?

thanks in advance

Andrew