Fig. 5
From: Solar and lunar daily geomagnetic variations and their equivalent current systems observed by Swarm
From left to right, Swam equivalent internal current system for Sq, external current system for Sq, internal current system for L and external current system for L, obtained using quiet-time data during 2017–2020 including all seasons and UTs. Upper and lower panels present the results derived with Swarm A and Swarm B data, respectively. Contour steps are 5 kA for Sq and 0.5 kA for L. It is noted that local lunar time equals local solar time at the new Moon