Dear,
I am not asking you to do the project for me. I would like to send you the project I have already done, where I have input the values for sigma a, sigma b, and sigma c based on my experience and the explanations from the website. I would appreciate it if you could review it and tell me whether these values are suitable for this type of project. What I am most interested in is what sigma a represents. Is it the a priori standard deviation or not? Since we have concluded that sigma b is the instrument's accuracy.

What interests me the most is what sigma a represents, because this parameter is very important, and as it changes, so do the results, both when performing the alignment and when conducting the preliminary accuracy analysis
Thank you.