How to read the NOAA Heating/Cooling degree day reports

Factual Questions
1

Found here
http://www.ncdc.noaa.gov/oa/documentlibrary/hcs/hcs.html

Here is an excerpt from the report. For each season there are three rows of data. It looks like the first is monthly data, the second is cumulative, and I can’t figure out what the third row means. There is no explanation in the report.



            STATE HEATING DEGREE DAYS (DIVISIONS WEIGHTED BY 2000 POPULATION), THRU JUL       2010--BASE TEMP = 65 DEG F
  STATE :    1 ALABAMA         
    SEASON      JUL      AUG      SEP      OCT      NOV      DEC      JAN      FEB      MAR      APR      MAY      JUN
 2009/2010        0        0        4      150      364      650      813      715      459      100       11        0
 2009/2010        0        0        4      154      518     1168     1981     2696     3155     3255     3266     3266
 2009/2010       .0       .0     26.7     91.7     98.5    104.6    110.2    117.2    119.2    116.4    115.1    115.0
2

Never mind, I found the legend in the footer.



 LINE 1 =  COOLING DEGREE DAYS (DIVISIONS WEIGHTED BY 2000 POPULATION)
 LINE 2 =  ACCUMULATED COOLING DEGREE DAYS(DIVISIONS WEIGHTED BY 2000 POPULATION)
 LINE 3 =  [ACCUMULATED COOLING DEGREE DAYS (DIVISIONS WEIGHTED BY 2000 POPULATION) / ACCUMULATED NORMAL]*100
           PERCENTAGE OF 9999.9 => 10000