All charts and maps generated using data collected by EDSM. All data is based on scanned bodies, and/or visited systems, so the numbers can be influenced by commander activity as much as actual distribution. The unusual patterns that emerge from some of the specific filtered maps are largely due to quirks of StellarForge, and there can be large variations between the distribution patterns of certain mass codes or certain star classes.
Maps and spreadsheets are updated once every two days in most cases. Codex maps, Graphs, and videos are updated weekly.