Fig. 1From: On the feasibility of routine baseline improvement in processing of geomagnetic observatory dataCalculated hourly baseline values (blue) with λ = 0.5, pseudo-observed values (red) and functionally defined hourly baselines (green) for the X (first plot), Y (second plot) and Z (third plot) components of the EMF. Fourth and fifth plots represent the corresponding Q φ and G functionsBack to article page