MONTHLY (new) SUMMARY DATA
                        --------------------------
 
         LOGICAL RECORD LENGTH - 242 CHARACTERS
 
THE FOLLOWING PARAMETER LIST AND FORMAT MAY BE USED TO READ A LOGICAL RECORD:
 
      CHARACTER*5 BKIDN
      READ (8,10) IDATE,BKIDN,TMEAN,TMAX,TMIN,HMAX,RMINL,CTMEAN,APTMAX,
     *WCMIN,HMAXAPT,WCLMINL,RPCP,EPCP,CPCP,EPCPMX,AHS,AVP,APET,AVPD,
     *RSV1,TRAD,AMAXTH,AMINRH,IHDD,ICDD,IGDD,NRADV,IRSV2,NOBS,NOBSP,
     *N6HE,NPMXMN,NMX,NMN,MXDAT,MNDAT,NDPR,NDTPR,NMAPT,NMWC,NSV,NVPT,
     *NPET,NMXRH,NMNRH,MXAPTD,MNWCD,MXPCPD,NDAYS
   10 FORMAT(1X,I6,A5,10F5.1,3F7.1,F5.1,4F5.2,F6.2,F5.2,2F5.0,3I5,I3,4I4,
     *3I3,2I8,9I3,3I8,I3)
 
THE FOLLOWING FIELDS ARE AVAILABLE:

    0.  BLANK - 1X

    1.  IDATE-YEAR AND MONTH OF DATA, IN FORM YYYYMM.
 
        FORMAT - I6
 
    2.  BKIDN- 5 CHARACTER STATION IDENTIFIER. THE  5 CHARACTERS
        ARE THE WMO BLOCK STATION NUMBER WHEN ASSIGNED OR 99 FOLLOWED
        BY THE 3 CHARACTER AIRWAYS CALLSIGN WHEN NO WMO BLOCK STATION
        HAS BEEN ASSIGNED.
 
        FORMAT - A5
 
    3.  TMEAN - AVERAGE DAILY MEAN TEMPERATURE COMPUTED FROM ALL
        PAIRED DAILY MAXIMUM AND MINIMUM TEMPERATURES.
 
        UNITS - DEGREES CELSIUS.
        FORMAT - F5.1
        MISSING  - -99.9
                
    4.  TMAX - AVERAGE DAILY MAXIMUM TEMPERATURE.
 
        UNITS - DEGREES CELSIUS.
        FORMAT - F5.1
        MISSING - -99.9
 
     5. TMIN - AVERAGE DAILY MINIMUM TEMPERATURE.
 
        UNITS -  DEGREES CELSIUS.
        FORMAT - F5.1
        MISSING - -99.9
 
     6. HMAX - THE HIGHEST MAXIMUM TEMPERATURE REPORTED DURING MONTH
 
        UNITS - DEGREES CELSIUS.
        FORMAT - F5.1
        MISSING - -99.9
 
     7. RMINL - THE LOWEST MINIMUM TEMPERATURE REPORTED DURING MONTH
 
        UNITS - DEGREES CELSIUS.
        FORMAT - F5.1
        MISSING - -99.9
 
     8. CTMEAN - THE REPORTED MONTHLY CLIMATE TEMPERATURE.
 
        UNITS - DEGREES CELSIUS.
        FORMAT - F5.1
        MISSING - -99.9
 
     9. APTMAX - AVERAGE MAXIMUM APPARENT TEMPERATURE.
 
        UNITS - DEGREES CELSIUS
        FORMAT - F5.1
        MISSING - -99.9
 
    10. WCMIN - AVERAGE MINIMUM WIND CHILL TEMPERATURE.
 
        UNITS - DEGREES CELSIUS
        FORMAT - F5.1
        MISSING - -99.9
 
    11. HMAXAPT- HIGHEST DAILY MAXIMUM APPARENT TEMPERATURE DURING MONTH
 
        UNITS - DEGREES CELSIUS
        FORMAT - F5.1
        MISSING - -99.9
 
    12. WCLMINL- LOWEST DAILY MINIMUM WIND CHILL TEMPERATURE DURING MONTH
 
        UNITS - DEGREES CELSIUS
        FORMAT - F5.1
        MISSING - -99.9
 
    13. RPCP - TOTAL REPORTED PRECIPITATION FOR MONTH.
 
        UNITS -  MILLIMETERS
        FORMAT - F7.1
        MISSING - -99.9
 
    14. EPCP - TOTAL PRECIPITATION INCLUDING ESTIMATES FOR ANY PERIODS
                THAT REPORTED AMOUNTS WERE NOT AVAILABLE.
 
        UNITS - MILLIMETERS
        FORMAT - F7.1
        MISSING - -99.9
 
    15. CPCP - TOTAL PRECIPITATION REPORTED IN CLIMAT MESSAGE.
        (NOTE--CLIMAT REPORTS PRECIPITATION TO THE NEAREST WHOLE
               MILLIMETER. THE CAC USES ITS PRECIPITATION REPORTED
               TO A TENTH WHEN THE DIFFERENCE COULD HAVE BEEN DUE
               TO ROUNDING OF THE CLIMAT VALUE.
 
        UNITS -  MILLIMETERS
        FORMAT - F7.1
        MISSING - -99.9
 
    16. EPCPMX - MAXIMUM DAILY PRECIPITATION INCLUDING ESTIMATES.
 
        UNITS -  MILLIMETERS
        FORMAT - F5.1
        MISSING - -99.9
 
    17. AHS - AVERAGE HOURS OF SUNSHINE
 
        UNITS - HOURS
        FORMAT - F5.2
        MISSING - -9.99
 
    18. AVP - AVERAGE VAPOR PRESSURE
 
        UNITS - MILLIBARS
        FORMAT - F5.2
        MISSING - -9.99
 
    19. APET - AVERAGE PAN EVAPORTRANSPORATION
 
        UNITS - MILLIMETERS
        FORMAT - F5.2
        MISSING - -9.99
 
    20. AVPD - AVERAGE VAPOR PRESSURE DEFICIT
 
        UNITS - MILLIBARS
        FORMAT - F5.2
        MISSING - -9.99
 
    21. RSV1 - RESERVED
 
        FORMAT - F6.1
        MISSING - -99.9
 
    22. TRAD - AVERAGE TOTAL RADIATION
 
        UNITS -
        FORMAT - F5.2
        MISSING - -9.99
 
    23. AMAXRH - AVERAGE MAXIMUM RELATIVE HUMIDITY.
 
        UNITS - PERCENT
        FORMAT - F5.0
        MISSING - -999.
 
    24. AMINRH - AVERAGE MINIMUM RELATIVE HUMITITY.
 
        UNITS - PERCENT
        FORMAT - F5.0
        MISSING - 999.
 
    25. IHDD - TOTAL HEATING DEGREE DAYS.
 
        FORMAT - I5
        MISSING - -999
 
    26. ICDD - TOTAL COOLING DEGREE DAYS.
 
        FORMAT - I5
        MISSING - -999
 
    27. IGDD - TOTAL GROWING DEGREE DAYS.
 
        FORMAT - I5
        MISSING - -999
 
    28. NRADV - NUMBER OF RADIATION VALUES
 
        FORMAT - I3
        MISSING - 0
 
    29. IRSV2 - RESERVED
 
        FORMAT - I4
        MISSING - 0
 
    30. NOBS - NUMBER OF OBSERVATIONS
 
        FORMAT - I4
        MISSING - 0
 
    31. NOBSP - NUMBER OF OBSERVATIONS WITH PRECIPITATION
 
        FORMAT - I4
        MISSING - 0
 
    32. N6HE - NUMBER OF 6 HOUR PERIODS THAT PRECIPITATION ESTIMATED
 
        FORMAT - I4
        MISSING - 0
 
    33. NPMXMN - NUMBER OF PAIRED MAXIMUM AND MINIMUM TEMPERATURES
 
        FORMAT - I3
        MISSING - 0
 
    34. NMX - NUMBER OF DAILY MAXIMUM TEMPERATURES
 
        FORMAT - I3
        MISSING - 0
 
    35. NMN - NUMBER OF DAILY MINIMUM TEMPERATURES
 
        FORMAT - I3
        MISSING - 0
 
    36. MXDAT - DATE THE MAXIMUM MONTHLY TEMPERATURE OCCURRED
 
        FORMAT - I8
        MISSING - -999
 
    37. MNDAT - DATE THE MINIMUM MONTHLY TEMPERATURE OCCURRED
 
        FORMAT - I8
        MISSING - -999
 
    38. NDPR - DAYS MEASURABLE PRECIPITATION REPORTED
	       [apparently includes days with a trace and days
		with zero precip as evidenced by NDPR being
		almost always equal to the days in the month;
		so essentially is a count of days with non-missing
		precip amount]
 
        FORMAT - I3
        MISSING - 0
 
    39. NDTPR - NUMBER OF DAYS A TRACE OF PRECIPITATION REPORTED
 
        FORMAT - I3
        MISSING - 0
 
    40. NMAPT - NUMBER OF DAILY MAXIMUM  APPARENT TEMPERATURES
 
        FORMAT - I3
        MISSING - 0
 
    41. NMWC - NUMBER OF DAILY MINIMUM WIND CHILL VALUES
 
        FORMAT - I3
        MISSING - 0
 
    42. NSV - NUMBER OF DAILY SUNSHINE VALUES
 
        FORMAT - I3
        MISSING - 0
 
    43. NVPT - NUMBER OF DAILY VAPOR PRESSURE VALUES
 
        FORMAT - I3
        MISSING - 0
 
    44. NPET - NUMBER OF DAILY PAN EVAPORATION VALUES
 
        FORMAT - I3
        MISSING - 0
 
    45. NMXRH - NUMBER OF DAILY MAXIMUM RELATIVE HUMIDITY VALUES
 
        FORMAT - I3
        MISSING - 0
 
    46. NMNRH - NUMBER OF DAILY MINIMUM RELATIVE HUMIDITY VALUES
 
        FORMAT - I3
        MISSING - 0
 
    47. MXAPTD - DATE MONTHLY MAXIMUM APPARENT TEMPERATURE OCCURRED
 
        FORMAT - I8
        MISSING - -999
 
    48. MNWCD - DATE MONTHLY MINIMUM WIND CHILL OCCURRED
 
        FORMAT - I8
        MISSING - -999
 
    49  MXPCPD - DATE THE MAXIMUM DAILY PRECIPITATION OCCURRED
 
        FORMAT - I8
        MISSING - -999
 
    50  NDAYS - NUMBER OF DAYS IN THE MONTH
 
        FORMAT - I3
 
 
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *

                  Definitions of various parameters

Climat temperature is the final corrected monthly mean temperature reported 
by a station.
                                  

Apparent temperature is an equivalent temperature that measures the degree 
of human discomfort due to combined heat and humidity.  It is based on studies
of human physiology and textile (clothing) science.  The apparent temperature
is designed so that it exceeds the air temperature when humidity is relatively
high.  The apparent temperature does not consider the effects of air
movement (wind speed) or exposure to sunshine.  


Wind chill is an equivalent temperature that measure the degree of physical 
discomfort and stress from combined cold and wind.  It was developed from
physiological studies of the of the rate of heat loss for various combinations
of ambient temperature and wind speed. The wind chill equals the air
temperature when the wind speed is 4 MPH or less.  At higher wind speeds, the
wind chill is lower than the air temperature and measures the
increased rate of heat loss from the body under windy conditions. 


Pan evaporation is the amount of moisture which is transformed from water to 
vapor as measured in a cylindrical pan (class-A pan) with a depth of ten
inches and a diameter of forty-eight inches.  The pan is filled with water
to a depth of eight inches and periodically measured.  When the water level 
drops to seven, the pan is refilled.
 

Total radiation is the sum of direct solar radiation also known as the beam
component and scattered radiation.  Direct radiation is beamed straight from
the sun to the earth with no deviation, while scattered radiation takes a less
direct route from sun to earth.


Vapor pressure deficit is the difference between the saturation vapor pressure
and the actual vapor pressure.
 

A heating degree day is an index used to quantify the amount of heating 
required for houses or businesses for a given day.  Heating degree days for a
given period are the summations of negative differences between the mean daily
temperature (F) and the base temperature of 65F for that period.
The  heating year  extends from July 1 to June 30.
 

A cooling degree day is an index used to quantify the amount of cooling 
required for houses or businesses for a given day.  Cooling degree days
for a given period are the summations of positive differences between the
mean daily temperature (F) and the base temperature of 65F for that period.
The cooling year  extends from January 1 to December 31.

 
A growing degree day is an index used to express crop maturity.  Growing 
degree days for a given period are the summations of the positive
differences between the mean daily temperature (F) and the base temperature
of 50F for that period.  Temperatures above 86F are set equal to 86.  
The  growing  season  extends from March 1 to November 2.