Station: ( 94230) HELEN   Missing Data:  17.9%
        Growing Degree Days to Selected Base Temperatures (F)

Base   Jan  Feb  Mar  Apr  May  Jun  Jul  Aug  Sep  Oct  Nov  Dec   Ann
 40 M  107  139  302  519  754  932 1067 1042  843  559  285  144  6693
    S  107  246  548 1067 1821 2753 3820 4862 5705 6264 6549 6693
 45 M   48   69  184  374  601  783  913  887  694  409  171   71  5204
    S   48  117  301  675 1276 2059 2972 3859 4553 4962 5133 5204
 50 M   16   27   95  241  449  633  758  733  545  268   86   28  3879
    S   16   43  138  379  828 1461 2219 2952 3497 3765 3851 3879
 55 M    5    8   37  133  302  484  604  578  396  147   33    7  2734
    S    5   13   50  183  485  969 1573 2151 2547 2694 2727 2734
 60 M    1    1    9   56  168  335  450  423  253   62    8    1  1767
    S    1    2   11   67  235  570 1020 1443 1696 1758 1766 1767

                    Corn Growing Degree Days
       Jan  Feb  Mar  Apr  May  Jun  Jul  Aug  Sep  Oct  Nov  Dec   Ann
 50 M   62   95  199  336  483  621  727  711  550  354  182   85  4405
    S   62  157  356  692 1175 1796 2523 3234 3784 4138 4320 4405

Derived from the 1956-1998 Data
M = Monthly Data    S = Running Sum of Monthly Data


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