Palv | alveolar N2 pressure
= (Pamb − 0.0627) · FN₂
= (4.0133 − 0.0627) · 0.7902
3.1218 bar
What the lungs are pushing into the blood at target depth.
Pt,0 | tissue pressure at t=0
= (Pamb,start − 0.0627) · FN₂
= (1.0133 − 0.0627) · 0.7902
0.7510 bar
Where this compartment started, assumed equilibrated at start depth.
k | rate constant
= ln(2) / T½
= 0.6931 / 27.0
0.0257 min⁻¹
Faster compartments → bigger k → catch up sooner.
e−kt | "fraction left to go"
= e−k · t
= e−0.0257 · 0
1.0000
1.0 at t=0, decays toward 0. Half-gone every T½.