Here is an example. This was an out-and-back ride, with the turn around point at ~42 miles. A couple miles prior to that, I got caught in a downpour and took refuge in a campgrounds office building until the worst was over. Note how the descent is shallower than the climb...until it appears I rode over a cliff at ~66 miles, (when the opening must have cleared). That was around the time I finally reached dry roads.