Fig. 2From: Comparison between IRI and preliminary Swarm Langmuir probe measurements during the St. Patrick storm periodElectron density value availability for Swarm A and B. Histograms of available electron density measurements as a function of MLT, for P1, M1, and R1, for Swarm A and B. Due to the geometry of Swarm constellation the MLT distribution of Swarm C is identical to that of Swarm ABack to article page