Occupancy of the gas binding sites by nitrous oxide. Occupancy of the gas binding sites by nitrous oxide showed a significant logistic relationship with the ratio of hydrophobicity (H) to volume (V). (A) 10 bar, r = 0.861 (r² = 0.741); (B) 20 bar, r = 0.885 (r² = 0.784); and (C) 30 bar, r = 0.898 (r² = 0.806). Y-axis: nitrous oxide (N₂O) occupancy of the gas binding sites as expressed in %; X-axis: the ratio of hydrophobicity (%) to volume (ų).