Open and view the contents of the data file "Sensor_1_Z_HTotal.DAT" in the data manager's spreadsheet. You can verify that:
<math> \frac{|H_z(z=26mm)|}{|H_z(z=27mm)|} = \frac{634537.65}{176149.4} = 3.60 </math>
<math> \frac{|H_z(z=51mm)|}{|H_z(z=50mm)|} = \frac{234195.41}{6856.169} = 3.44 43 </math>
<table>