Quote:
Originally Posted by nikitopo
I checked for elevation differences with a gps device. Your comment to make pulls in both directions doesn't make much sense. You cannot make the test at the same time and if there is wind, then it might not be steady. It can change direction or intensity. The best option is to avoid windy days.
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No, the best option is to collect data in a way that allows you to average it out instead of basing it on (likely bad) assumptions.
You can't make two pulls at the same time and all that stuff you mentioned could change between pulls in the same direction, and you need at least 4-5 to be able to find any significant differences in the data once you've averaged out the discrepancies.