Fig. 2From: Wave-slope soaring of the brown pelicanEfficiency of steady, level flight out of ground effect in absence of ocean waves. Top Panel: COT as a function of airspeed for steady, level flight out of ground effect (OGE). Minimum-cost velocity ∼13.4 m/s with a corresponding COT of ∼1.5 J/m. Bottom Panel: Power output as a function of airspeed for steady, level flight OGE. Minimum-power velocity ∼10.0 m/s with a corresponding power output of ∼17.9 WBack to article page