I'm using BaseCamp 3.3.1 on a Macintosh. My GPX track file contains elevation data. However, when I look at the elevation profile, I notice that the altitude reflected in the graph differs from the altitude in the data table. For example, a randomly selected point in my table shows the altitude to be 1691 meters. But, when I highlight that point in the table, the graph shows the altitude at 1684.3 meters. Another random point shows 3078 in the table and 2815 in the graph. Any idea why this might be?
