Alph2z, I do not need to 'prove your data wrong'. You do not have any data for me to prove wrong. Allow me to spell it out for you, as I don't think you fully understand the terms you are trying to use. IAS means indicated airspeed, ie the speed that is indicated on the ASI (airspeed indicator).
Still with me? Now, the IAS is not, has never been, and can never be 'theoretical' - OK? Quite simply, the IAS (indicated airspeed) is the speed that is indicated on the ASI (airspeed indicator).
Now do you understand why do not have any data for me to prove wrong?