Trepan depths measured from front of front bush Increment Nominal depth Measured depth Depth from saturation 0 0 (56.2) 4.2 1 5 61.62 9.6 2 10 66.63 14.6 3 20 76.88 24.9 4 30 87.30 35.3 5 40 97.25 45.3 6 50 106.85 54.9 7 60 117.45 65.5 8 70 127.00 75.0 9 80 136.20 84.2 According to my geometrical calculations, this means that the air probe saturation should be approximately 52 mm from the front of the front bush. All of the .xml files from the actual measurement of each increment use the EDM 0mm measurement as the 'before EDM' measurement. In fact, I should be using "A_uh after cutting, before EDM". In the .xlsx files, I have made this change - they contain "A_uh after cutting, before EDM" and the data for each increment.