Table A-A. Wind speed means and extremes for 10 meter tower level at GRI

               Monthly
                 Mean         Greatest Hourly Mean         Greatest Peak Gusts
                Speed        Speed       Direction        Speed       Direction
                (MPH)        (MPH)     (deg) (16th)       (MPH)     (deg) (16th)

January          6.7          46.2       240    WSW         63.2       240    WSW
February         8.2          38.5       244    WSW         70.4       255    WSW
March            9.8          43.5       243    WSW         66.0       240    WSW
April           10.9          50.4       253    WSW         76.5       247    WSW
May             10.8          44.9       243    WSW         71.4       270    W
June            11.0          43.1       233    SW          77.2       223    SW
July            10.1          40.4       243    WSW         81.6       232    SW
August           9.5          37.9       230    SW          66.6       256    WSW
September        9.0          40.2        24    NNE         65.4       240    WSW
October          8.9          42.5       230    SW          65.2       224    SW
November         8.1          46.1       234    SW          67.6       234    SW
December         7.2          39.5       236    SW          57.3       238    WSW

ANNUAL           9.2           50       253    WSW         81.6       232    SW

a. Data period of record spans January 1994 through December 2022.