@korina Yes I'm looking to the surface conditions. I fly paragliders wind at surface/low level is critical for us. The location is in the Netherlands, where most ground is at sea-level. After your reply I noticed that the Sounding diagram starts at 200m elevation Which isn't clearly stated. 99.99% of the Netherlands is below 200m elevation. Can you clarify why the diagram starts at 200m elevation even for lower locations? Is just a representation issue or doesn't the model have data below 200m?