I'm curious as to how they got that new measurement Steve. I'm going to take another reading in two weeks to see if it's consistent...(if I make the summit, don't want to get ahead of myself here).
My understanding is that it came from an adjustment in the mean tide figure used to establish sea level. GPS units will either take the altitude from a pressure reading or from the topo data. In either event the altitude reading will be keyed to the topo data which will probably not reflect the tide data change which was done just in the last couple of years.
