Hello, and thank you for your question.
The two meteograms for LSZK Speck-Fehraltorf may differ because they can originate from different forecast update times or model runs, resulting in variations in timing or forecast values. They might also be based on different forecast systems or models with distinct spatial and temporal resolutions, which influences the displayed data. Additionally, the embedded meteogram on the weather map and the all-in-one meteogram may use different data sources or resolutions, causing discrepancies.
The terrain altitude shown in the meteograms is based on the average altitude of the grid cell rather than the exact location altitude, which can affect the visual representation, especially in areas with complex terrain.
We hope we were able to answer your questions and wish you pleasant weather with meteoblue.