[pct-l] PCT Elevation gain/loss Stats

[Brick Robbins]

On Sun, Feb 23, 2014 at 7:48 PM, Paint Your Wagon <n801yz at hotmail.com> wrote:
> Wouldn't the GPS keep track of all that?

Generally,  Altitude error is specified to be 1.5 x Horizontal error
specification.

Being off by +/- 50ft  e very half mile is no big deal horizontally
because the error don't accumulate since you keep walking
progressively, and we cover quite large distances, but being off +/-
75ft (1.5 x the horizontal error) is a big deal since you don't
continue in a progressive line, and the elevation error are a much
larger percentage of the total elevation change.

due to this type of error, the GPS meausured cumulative elevation
gain/loss is not particularly reliable