I didn't actually calcualte the DA using the E6B. I got the DA readout
from the Davtron M655 (http://www.davtron.com/m655.html).

However to answer your qustion, the standard temp of 59F/15C is at sea
level. At higher elevation the standard temperature is lower (I
believe it's close to 2C decrement for each thousand feet in the
standard atmospheric model). So at 6000 feet elevation, the standard
temperature (when the pressure altitude equals density altitude) is
only slighly above freezing.

So in the high countries, if you can walk around in a T-shirt, you
probably need to worry about densitity altitude :-)


wrote:
Ok, I am getting confused again,,,, G DA was higher then the field
elevation with the air temp at 32 degrees. Standard day temp is 59f, I
guess you could have had a very"low" pressure system pass through that
mornin.....

Ben
Jackson Hole WY 6430 MSL...
N801BH