Ιnput referred noise of an amplifier
Per your final table, 1Hz has 7.48e-5 noise voltage. And 1MHz has 6.55e-11. A fine V = 1/F curve. This is not Power = 1/Frequency, the expected 1/F behavior.

Given V = 1/F, this is the power of an integrator circuit.

To combine the noise power, square the noise density and integrate. You'll find the highest octave sets the noise density.