| Cloud Cover |
|
Overcast |
90% cover
|
80% cover
|
70% cover
|
60% cover
|
50% cover
|
40% cover
|
30% cover
|
20% cover
|
10% cover
|
Clear |
|
| Transparency |
|
Poor |
Below Average
|
Average |
Above average
|
Transparent
|
|
| Seeing |
| Bad
1/5 |
Poor 2/5 |
Average 3/5 |
Good 4/5 |
Excellent 5/5 |
|
| Darkness |
| -4 |
-3 |
-2 |
-1 |
0 |
1.0 |
2.0 |
3.0 |
3.5 |
4.0 |
4.5 |
5.0 |
5.2 |
5.4 |
5.6 |
5.8 |
6.0 |
|
| Winds |
|
Storm |
Strong |
Moderate |
Light to Moderate |
Light |
Calm |
|
| Humidity |
|
<29% |
30% to 35% |
35% to 40% |
40% to 45% |
45% to 50% |
50% to 55% |
55% to 60% |
60% to 70% |
65% to 70% |
70% to 75% |
75% to 80% |
80% to 85% |
85% to 90% |
90% to 95% |
>95% |
|
| Temperature |
|
< -35C |
-35C to -30C
|
-30C to -25C
|
-25C to -20C
|
-20C to -15C
|
-15C to -10C
|
-10C to -5C |
-5C to 0C |
0C to 5C |
5C to 10C |
10C to 15C |
15C to 20C |
20C to 25C |
25C to 30C |
30C to 35C |
35C to 40C |
>
40C |
|
