Fig. 2.
(A) Total lung capacity (TLC) estimated using two methods. TLC was estimated as the volume of air in the lung between the lower and upper asymptote of the published sigmoidal function (Eqn 1) and the average minimum air volume (MAV). TLC30 was estimated as the air volume injected for a transpulmonary pressure of 30 cmH2O plus the MAV. The solid line is the line of identity. (B) Data showing the difference between TLC and TLC30 plotted against body mass (Mb, kg). Key abbreviations: Pg, Pagophilus groenlandicus; Pv, Phoca vitulina; Hg, Halichoerus grypus; La, Lagenorhynchus acutus; Dd, Delphinus delphis; Gm, Globicephala melas; Pp, Phocoena phocoena; Gg, Grampus griseus. Closed symbols represent phocids, and open symbols represent odontocetes.