About the F6 Form
The Weather Service Form F6 is used by reporting stations
to record their unofficial daily climate data for the month. The daily
data from the form is then used to calculate sums, means and departures
for the month. The F6 is then sent to the National
Climatic Data Center in Asheville, North Carolina for archiving, additional
quality control, and official notation.
The following is a brief description of each column of
the WS Form F6:
TEMPERATURE
Max (Maximum): The high temperature for the day from midnight
to midnight standard time
Min (Minimum): The low temperature for the day from midnight
to midnight standard time
Mn (Mean): The mean temperature for the day from midnight to
midnight, or the average of the Max and Min temperatures
Dep (Departure): The difference between the Mean for the day
and the normal Mean for that date 
DEGREE DAYS
Htg (Heating Degree Days): The difference between the Mean for
the day and 65 degrees, when the Mean is below 65 degrees
Clg (Cooling Degree Days): The difference between the Mean for
the day and 65 degrees, when the Mean is above 65 degrees 
PRECIPITATION
Total: The liquid equivalent amount of all precipitation for
the day from midnight to midnight, including rain, snow, sleet, freezing
rain, hail, etc.
Snow: The total amount of precipitation from midnight to midnight
made up of frozen or freezing precipitation
Depth: The depth of snow on the ground at 7 am standard time 
WIND
Avg (Average): The average sustained, or twominute average,
wind for the day from midnight to midnight
Fast (Fastest): The speed of the fastest individual sustained,
or twominute average, wind for the day from midnight to midnight
Dir (Direction): The direction of the fastest sustained wind,
in degrees on the compass 
SUNSHINE
Mins (Minutes): The total number of minutes of sunshine for the
day from sunrise to sunset
%Pos (Percent of Possible): The percent of possible sunshine
for the day 
WEATHER
Occur (Occurrences): See the chart at the bottom of the form
for definitions of symbols 
PEAK WIND
Spd (Speed): The speed of the peak gust of wind for the day from
midnight to midnight
Dir (Direction): The direction of the peak wind gust, in degrees
on the compass 
MISCELLANEOUS
Fast (Fastest): The highest sustained wind for the month
Dir (Direction): The direction of the highest sustained wind
Poss (Possible): The most number of minutes of sunshine possible
for the month
Prct (Percent): The percentage of possible sunshine received
for the month, or the total minutes (Mins) divided by the possible
minutes (Poss ) times 100
Spd (Speed): The peak gust of wind for the month
Dir (Direction): The direction of the peak gust 
