Table 5.2-7. Monthly and annual summary of daily freeze/thaw cycles for CFA(a).

                 Average Number        Maximum Number        Minimum Number
                    of Cycles             of Cycles             of Cycles
                      (%)                   (%)                   (%)

January               33                    81                     3
February              58                   100                     0(b)
March                 83                   100                    39
April                 73                    97                    37
May                   30                    65                     3
June                   6                    17                     0
July                   0                     6                     0
August                 2                    16                     0
September             26                    57                     0
October               74                    97                    39
November              77                    97                    27
December              42                    81                     6

ANNUAL                42                    54                    23

a. Data period of record spans January 1950 through December 2005.
b. Air temperatures remained below freezing the entire month.