Fig. 7. Flux (f₀) estimation accuracy of the non-steady-state diffusive flux estimator as a function of the number of observations used in the estimate and scaled deployment time (t/). Data are for fixed effective chamber heights h = 10 and 20 cm, and 30-min deployment periods on soil with air-filled porosity = 0.3. The simulated measurement precision of the headspace gas concentration (C_t) was ±1.5%. Data plotted represent the mean ±95% CI derived from 1000 simulated flux estimates. The dashed line represents flux estimation accuracy when C_t was measured without error.