|
ARIZONA
/ Flagstaff
Latitude (N): 35.13
Longitude
(W): 111.67
Elevation (feet): 7005
Annual Precipitation (inches): 21
Annual heating degree days (base 65 deg. F): 7,250
APPROXIMATE
SUN ANGLE (at noon facing due south)
|
Mar
21
|
June
21
|
Sept
21
|
Dec
21
|
|
55 deg.
|
79 deg.
|
55 deg.
|
31 deg.
|
AVERAGE DAILY SOLAR RADIATION
| |
March
|
June
|
September
|
December
|
| On
horizontal surface |
|
kWh/m2
|
5./1 |
7.7 |
5.4 |
2.8 |
|
BTU/ft2
|
1,618 |
2,442 |
1,714 |
888 |
| On
vertical surface |
|
kWh/m2
|
4.6 |
2.2 |
3.9 |
5.1 |
|
BTU/ft2
|
1,459 |
698 |
1,237 |
1,618 |
AVERAGE TEMPERATURE
AND WIND SPEED
| |
March
|
June
|
September
|
December
|
| Daily
Min. - Degrees F |
21 |
41 |
41 |
16 |
| Daily
Max. - Degrees F |
49 |
78 |
73 |
43 |
| Wind
Speed - miles/hour |
6.9 |
6.7 |
5.1 |
5.8 |
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