Picture 1: Specific electrical conductivity and resistance of a free space
In these equations, m - represents the mass of the electron and e - represents the electric charge of the electron. N0 and T0 here are equal to 1, because this is elementary resistance/conductivity which refers to only one electron as elementary charge particle and for a duration of its movement of one second.
Picture 2: Values of the specific electrical conductivity and resistance of a free space
The values of the elementary specific electrical resistance and conductivity of a free space are shown on Picture 2. That's relatively low conductivity and high resistance, but we should not forget the fact that these values refer only to one isolated electron.
Finally, we can conclude that a free space has electrical resistance and conductivity as its own electric properties. This fact should not be surprising at all, because it has a physical nature. Also, the known fact from the practice is that electric current can flow in a free space. One real example for that are the vacuum tubes used in electronics, where the current flows between the tube electrodes (anode and cathode) in a vacuum or a free space. So, if electric current can flow through free space, then the free space must have electric resistance and conductivity. The real resistance and conductivity of one observed part of the free space can be calculated using the equations shown on Picture 1 and the particular configuration of the source which provide the electric current flow in the observed free space.
As we mentioned above, the whole approach and detailed analysis can be found in the book "Universal Time-Space" site.