You have your Density data plotted correctly, but you have the Density vertical axis labeled as 'Log' - which it isn't (and shouldn't be).
Such plots are referred to as D - log E plots. ( Density-Versus-the-Log-of-Exposure )
BTW, the condensor plots look OK to me. Plot the three different grades on separate sheets of paper so you can slide them back and forth to more easily see the differences.