holrum@hotmail.com said: > te a histogram of the values (along with the average and standard > deviation). I'm now using the peak histogram bin(s) to determine the > message offset time. The histogram technique has the advantage of ignoring > outlier points that can be caused by the system being tied up / interrupted > doing other things (like shoving a Windows 10 upgrade up your systems' rear > I/O port ;-() How do you determine the bin size? ntpd has an interesting filter in that area. For refclocks where it has many samples, it sorts them, then discards roughly 1/3 of them as outliers. The code is simple. Compute the average then check the first and last samples to see which is farther away. Drop it, iterate. -- These are my opinions. I hate spam.