Fig. 3. Flux (f₀) estimation accuracy of selected models as a function of scaled deployment time (t/). Data points represent seven soil air-filled porosities () ranging from 0 to 0.5 and five effective chamber heights (h) ranging from 5 to 100 cm. Deployment period was 30 min. Non-steady-state diffusive flux estimator relative errors vary from –0.1 to –0.2%. The solid lines are not fits, but connect the data points to aid the eye.