Simultaneous measurements of solar wind from L1, shocked solar wind from Magnetosheath, and measures of geomagnetic response from ground-based indices

These data are compiled from other sources and are used in the calculations and simulations for the paper "Regression to the Mean of Extreme Geomagnetic Storms". Data.zip contains the curated data set of simultaneous measurements from L1 satellites and ground-based measurements. It also contains Simultaneous measurements made in the Magnetosheath, and upstream of the bow-shock, with time stamp, satellite ID, and Kan-Lee electric field values. The methodology used to create these magnetosheath measurements is described by Michotte de Welle et al. (2024). We have presented the minimal necessary data to reproduce the results. Here are the acknowledgements of the primary data sources: All data we have used is publicly available. We thank GSFC/SPDF OMNIWeb service for the WIND spacecraft measurements. The WIND spacecraft measurements of the solar wind propagated to the bow shock can be accessed from https://spdf.gsfc.nasa.gov/pub/data/omni/high_res_omni/sc_specific/. The MMS, Cluster, DoubleStar, and THEMIS data can be accessed from the GSFC/SPDF web service https://spdf.gsfc.nasa.gov/. The polar cap index values PCN and PCS were downloaded from https://pcindex.org/archive. We thank Dr. Oleg Troshichev of the Arctic and Antarctic Research Institute for this data (https://pcindex.org/contacts). The auroral electrojet indices were downloaded from the SuperMAG database https://supermag.jhuapl.edu/indices/. For SuperMAG indices, we gratefully acknowledge the SuperMAG collaborators (https://supermag.jhuapl.edu/info/?page=acknowledgement).