NOVEMBER S.A.D. INDEX

November is the first month since March that Index readings consistently indicate a high likelihood of seasonal affective disorders. The average length of November’s night is almost as great as the night’s length in December and January; the weather becomes more severe, and clouds thicken: all those factors equal S.A.D.

Key for Interpreting the S.A.D. Index: Clouds = Cloud Cover; Weather = Weather Conditions; Dayl = Hours of Daylight. Totals of 75 - 65: Severe stress for those who suffer from seasonal affective disorders; 64 - 50: Moderate stress; 49 - 35: Light stress; 34 - 25: Occasional stress for those most susceptible to S.A.D.; 24 and below: Only people with extreme sensitivity to S.A.D. experience seasonal affective disorders below an Index reading of 24.

Day                 Clouds     Weather     Day         Totals
November 1:       10             12             21         43
November 10:     13             17             23         53
November 20:     16             16             23         55
November 30:     19             18             24         61

DECEMBER'S S.A.D. INDEX

Most people do not need an Index to know that December and January are the worst months of the year for seasonal affective disorders. No matter whether you live - in the warm South or the frigid North - the nights are the longest of the year, the weather is cold, and the percentage of cloud cover is the highest of the year.
Key for Interpreting the S.A.D. Index: Clouds = Cloud Cover; Weather = Weather Conditions; Dayl = Hours of Daylight. Totals of 75 - 65: Severe stress for those who suffer from seasonal affective disorders; 64 - 50: Moderate stress; 49 - 35: Light stress; 34 - 25: Occasional stress for those most susceptible to S.A.D.

Day             Clouds         Weather         Day         Totals
December 1:     20             18                 24             62
December l0:     23             18                 25            66
December 20:     25             21                25            71
December 25:     25             24                25            74
December 31:     24             22                24            70