bearfoil
As I mentioned in my messages before the list was posted through help of mm43 all I did, have the Graphs published in that ATSB report printed enlarged, put them side by side and read of the data shown. It must be clear to everyone that this is not a very sophisticated evaluation method. My intention was, with the data at hand to make a more logical approach to the facts at hand.
So zero in my list means zero in the ATSB graphs. These might be in original prints 2 or 3 time as large and much more precise. What none of us knows How perfect calibration of the recording media was. As is well known, many little drifts off the ideal line can add to a major error.
Hope this explains a bit the content of my list.