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.
| Score | Quality | Definition |
|---|---|---|
| +4 | Excellent | Excellent resolution of details and excellent visibility, good demarcation from surroundings |
| +3 | Good | Good resolution of details, demarcation from surroundings, clear visibility |
| +2 | Fair | Insufficient resolution of details, insufficient visibility, insufficient demarcation |
| +1 | Bad | Details not resolved, bad demarcation from surroundings, bad visibility |
| 0 | No image | Invisible |
