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.
Different groups considering contextual factor.
| Contextual Factor Groups | SVF, | high | Section 1∼15 |
| low | Section 16∼30 | ||
| Building shadow cast, | unshaded time | 2pm | |
| shaded time | 10am & 5pm | ||
| Building location, | East | Section 3,6,9,12,15,18,21,24,27,30 | |
| West | Section 1,4,7,10,13,16,19,22,25,28 |
