Supplementary material

Table S1: Explanatory variables trialed within the statistical models. The Swarm data products are available at ftp://swarm-diss.eo.esa.int, the OMNI resolution data are available at https://spdf.gsfc.nasa.gov/pub/data/omni/, the Service International des Indices Géomagnétiques data are available at https://isgi.unistra.fr/geomagnetic_indices.php and the Laboratory for Atmospheric and Space Physics data are available at https://lasp.colorado.edu. Access here

Table S2: The distribution chosen, the transformation applied to the dependent variable, the explanatory variables (EV), parameter estimates (PE) and the uncertainties in the parameter estimates (ΔPE) for the version 1 of the models fitted. An explanation of the terms in the model is given in Table S1.

Table S3: As Table S2, but with separate models in the equatorial region for different times of day.

Table S4: As Table S2, but for version 2 of the models.

© A.G. Wood et al., Published by EDP Sciences 2024