Method 22

Observer Name *

Date *

Year

Month

Day

Sky conditions *

Clear

Cloudy

Time *

Hour

:

Minute

am

pm

Sun position in the sky

Wind speed(mph) *

Observation Stack 1 *

Opacity

No opacity

Watch the stacks for ten minutes. Indicate if there is any opacity(lack of transparency)

Observation Stack 2 *

Opacity

no opacity

Watch the stacks for ten minutes. Indicate if there is any opacity(lack of transparency)

Observation Stack 3 *

Opacity

No opacity

Watch the stacks for ten minutes. Indicate if there is any opacity(lack of transparency)

Opacity time stack 1(If none, leave blank)

Opacity time stack 2(If none, leave blank)

Opacity time stack 3(If none, leave blank)