Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Solid bars indicate individuals at the range core (within the 50 km radius of Johannesburg), and open bars indicate individuals at the range margin (beyond 300 km but excluding individuals from the Durban population).
