In addition to the orientational disorder, molecules in frozen solution will adopt different conformations with different inter-spin distances. As a result there will be a distribution in 𝜔 C which will further broaden the inter-spin coupling distribution. Here we take 𝜔 C to be normally distributed with mean 𝜇 + ' and standard deviation 𝜎 + ' . As expected, as 𝜎 + ' is increased the fidelity of both models decreases (Figure ). By comparing these models to our experimental data, we determine that for our sample 𝜎 + ' is 0.150 MHz and 0.133 MHz for the uniformly weighted and orientational selective models, respectively. These correspond to fidelities of 0.746 and 0.820, respectively.