Andrew I have been doing this for years, and pretty sure it is working fine, no errors or warnings flagged by Therion at least. Although I have not checked that the weighted averaging of the positions appears to be working correctly for about 5 years now, so there is a possibility it has got broken in the meantime. However nothing gross is happening or I would have noticed. There were some issues and work arounds that were discussed on the forum. https://www.mail-archive.com/therion@speleo.sk/msg03747.html Olly on Survex Jan 2012 https://www.mail-archive.com/therion@speleo.sk/msg03750.html Describing the characteristics https://www.mail-archive.com/therion@speleo.sk/msg03751.html Stacho looking into it https://www.mail-archive.com/therion@speleo.sk/msg04327.html Xaviers solution Dec 2013 I vaguely recall that the multiple fixes did start turning up in loop reporting, as Satcho described, but I'm not sure about that - could be imagination. I think it is appropriate functionality for Therion. Over time many position fixes on a station, usually in different surveys, all with their own std errors. Therion as far as I know handles these just fine, averaging appropriately. If it does not, then something is broken. At least two datasets where I do this are still in active use, if I get time I will make sure all is still well. I think it is a topic that deserves a wiki FAQ or Tips and Tricks entry Bruce -----Original Message----- From: Therion [mailto:therion-bounces@speleo.sk] On Behalf Of Andrew Atkinson via Therion Sent: Friday, 8 September 2017 12:08 AM To: List for Therion users <therion@speleo.sk> Cc: Andrew Atkinson <andrew@wotcc.org.uk> Subject: [Therion] Multiple fixes for the same point 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 _______________________________________________ Therion mailing list Therion@speleo.sk https://mailman.speleo.sk/listinfo/therion