Latest coordinates shifted by 200m at DY2 compared to station location

[BaptisteVandecrux]

red dots are monthly averaged transmitted positions

[BaptisteVandecrux]

During the bufr processing, a linear regression is fitted to the available transmitted coordinates. Unfortunately, this regression and the OLS minimization is to sensitive to outliers. E.g. these outliers:

... lead to this linear regression:

Switching to a RANSAC regressor leads to more robust estimation:

More testing on the way before I make this update.

[BaptisteVandecrux]

Examples where RANSAC don't work:

another problem at KAN_M where only coordinates from SBD messages are available:

For the moment I am switching off the gap-filling with SBD coordinates and using SBD average when no coordinates are available.

[BaptisteVandecrux]

This is now fixed: