Figure 1From: Continuous in situ measurements of volcanic gases with a diode-laser-based spectrometer: CO2 and H2O concentration and soil degassing at Vulcano (Aeolian islands: Italy)An example of an experimental absorption spectrum (○) and the best fit of Eq. (1) (solid line). In the plot below the residual between experimental data and the best fit is reported as percentage variation with respect to the signal. The standard deviation of the plotted residual is 0.5%.Back to article page