A customer in Thailand had a case of an old building with a request to reuse its foundations. The construction engineers had to verify the length. They used the parallel seismic instrument PSI from Piletest to run the test measurement.
The first Results 1 looked unusable, so they sent an SOS (Second Opinion Service)
We sent the primary analysis (Results 2), and then we took another shot at it with additional filtering of the PSI software and got clear results (Results 3)
Link to the Piletest YouTube channel on the subject
https://www.youtube.com/playlist?list=PLu7oHXWS1nSTpzMIS2_u6WY7GTD55MB6T