Why do the cumulative values (Vector family products) of the logbook not correspond to the real values on the ground?
For a fast sport activity like bicycling you need to choose a short recording interval to detect all altitude changes. If the recording interval is too long, the cumulative values will be smaller than they are in reality. The right recording interval depends on the type of activity, terrain and the wanted duration of the logbook. The shorter the interval, the more precise will be the values recorded into the memory.
