What this site can tell you about a place
The hardship reading here is this site's own estimate. It is not the United Nations' classification and it differs from the UN duty station categories. Where you need the official position, the sources of record are linked below, and on every duty station's own page.
The United Nations classifies duty stations A to E and H, and that classification decides real things: allowances, rest cycles, danger pay and whether families may come. Its terms permit downloading it for personal use, not republishing it, so this site does not carry it. Instead it estimates hardship from open data, says what each reading is built on, and points you at the source of record.
These are the sources of record. This site links to them rather than copying them, and nothing here replaces any of them.
UNDSS sets the United Nations' security levels for each location. They are not published, and nothing on this site is one. If you need a security level, ask the organisation recruiting you.
The known weak spot is isolation. Where hardship comes from remoteness and thin services rather than violence, this estimate reads a place as easier than the United Nations does. Rural posts in Colombia are the clearest example.