Hello Everyone,I think this is a very simple problem, I have been struggling
with it for a few days now.
I have a 10-year daily data  in the following format.


 Date             A    B        C       D           E
 1978-10-22   18  20.64   0.0   0.176     -1.76
 1978-10-23   15  17.06   0.4   0.147      2.52
 1978-10-24    3   7.588   0.0   0.068     -6.86
 1978-10-25    9  11.491   0.0   0.102    -1.01
 1978-10-26   13  14.98   1.4    0.130     1.26

I want to calculate the monthly and Annual average averages of A, B, C, D,
and E, for the 10 years.

I tried to use the xts package to convert the data into a time series object
but was not able to even change it into the time series object.
Any help would be highly appreciated

Thank you in advance.

-- 
Subodh Acharya
University of Florida
Gainesville, FL.

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