What is the Accuracy of GPS Measurement

Best case scenario, several meters. This translates to between 0.0001° and 0.00001° latitude and longitude at the equator.

Why so many decimals on the latitude and longitude

The where_lat and where_lon are displayed in degrees. The value is converted from degrees and fractional minutes.

The conversion of fractional minutes to fractional degrees may result in lengthy decimal expansions in the result.

Values less than 1 x 10^-5 are not significant.

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