Great Micha, thanks.
One question for relative ellipses. I put imported nexus points (network simulation, not deformation analysis).
from to
S1 S2
S2 S3
S3 S4
S4 S1
etc.
I have 42 rows.
Problem is that I did not got all relative ellipses.
Look at image:
https://ibb.co/Fq3KRG3

For most directions, these is missing relative confidence info.
Here are results:
https://ibb.co/6yk9Chq

I cant figure out what is problem to get results for all nexus points.
Thanks in advance,
Zaklina