matlab - Find Date Range Rows and Extract -

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this should straight-forward in matlab don't know how , stuck. have data looks below in form: mm/dd/yyyy hh:mm windspeed - hourly data spanning years 1991 present (2013) of cell arrays , numeric array:

8/22/1993 23:00 2.381453514 8/23/1993 0:00  3.39369154 8/23/1993 1:00  5.398661613 8/23/1993 2:00  7.231492996 8/23/1993 3:00  9.187699318 8/23/1993 4:00  9.802619934 8/23/1993 5:00  8.85418129 8/23/1993 6:00  9.889941216 8/23/1993 7:00  10.4628706 8/23/1993 8:00  10.8967123 8/23/1993 9:00  10.12729263 8/23/1993 10:00 9.106620789 8/23/1993 11:00 7.600066185 8/23/1993 12:00 6.597990036 8/23/1993 13:00 6.764455795 8/23/1993 14:00 7.360760689 8/23/1993 15:00 5.828835011

i trying extract third column (windspeed). need able change date range extract month @ time example rows containing month "08" august of year 1993 , future use rows containing "09" september , year 2013. i'm not sure if it's better use datenum or find function , how code either case.
using xlsread read .csv file portion of data shown above.

i don't know how import data now, , variables in workspace are, here's way it:

find xxx.csv-file in current folder window in matlab. double click import it. in window appears, can select delimiter: space. play around settings, find "best fit"

enter image description here

now, have variable in matlab workspace.

hhv = datevec(hh);  % interested in column 4, hour: % hhv matrix [2013, 1, 1, hour, 0, 0]

now, if want windspeeds between 0:00 , 06:00 08/23/1993:

winds = ws(dt == datenum(1993,8,23) & hhv(:,4) >= 0 & hhv(:,4) < 6)  winds =      3.3937     5.3987     7.2315     9.1877     9.8026     8.8542

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