Originally Posted by
Traffic_Is_Er_Was
Until you make the measurement, by whatever means, and record it somehow, you don't have any data. So at some point, prior to any filtering, calibrating etc, it is the ultimate raw data, thus "pristine". At which point it stops being pristine is obviously up for conjecture. As I said, you have to draw your baseline somewhere.
Nothing ultimate about raw data. It's just one step in the chain.