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.
Standardized calculation of facility coverage index.
| Level | Standardization interval | Score |
|---|---|---|
| None | Min | −3 |
| Low | (Min, 0.4Med+0.6Min] | −2 |
| Lower | (0.4Med+0.6Min，0.8Med+0.2Min] | −1 |
| Medium | (0.8Med+0.2Min, 0.8Med+0.2Max] | 1 |
| Higher | (0.8Med+0.2Max, 0.4Med+0.6Max] | 2 |
| High | (0.4Med+0.6Max, Max] | 3 |
