Fix some errors in the freestream estimation code
Fix some errors in the freestream estimation code

TUDelft-DataDrivenControl/WFObs,TUDelft-DataDrivenControl/WFObs,TUDelft-DataDrivenControl/WFObs,TUDelft-DataDrivenControl/WFObs,TUDelft-DataDrivenControl/WFObs