Raj wrote:
My GPS reading is about 850 +- 1 The "official" height ASL = 920 This calculator gives me ~936 So what should I use ?
Use the self-survey result. The GPS isn't wrong, it's just reporting your altitude in a different system than you are used to. The calculator allows you to check the GPS-reported altitude in the system that you are familiar with.
Specifically, the calculator translates the GPS altitude (which is specified not with respect to actual mean sea level, but rather to an abstract, calculated "geoid") to one more familiar to you (specified with respect to mean sea level). In your case, 936 is in pretty good agreement with 920, telling you that the GPS-reported value is plausible.
Best regards, Charles _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
