How do I input this information in a cell array

I have this text file and I want to store the fist 4 columns, starting from the third row in a variable called 'Time'

The text file is this,

 http://www.ndbc.noaa.gov/data/realtime2/41053.txt

I am proceding the following way,

 clc,clear all

 fid = urlwrite('http://www.ndbc.noaa.gov/data/realtime2/41053.txt','SJ.txt'); % URL from CARICOOS
Data = SJ;

 Time = Data{1,1};

The following is the function code,

 function    Data = SJ 

 fid = fopen( 'SJ.txt' );
        Data = textscan( fid, '%d%d%d%d%d%f%f%f%f%f%s%s%s%f%f' ...
                    ,   'Delimiter'             ,   ' '     ...
                    ,   'CollectOutput'         ,   true    ...
                    ,   'HeaderLines'           ,   2       ...
                    ,   'MultipleDelimsAsOne'   ,   true    ...
                    ,   'Whitespace'            ,   ''      ...
                    );
        fclose( fid );
    end

I keep getting this error,

 Error in ==> SJ at 3
    end
??? Output argument "Data" (and maybe others) not assigned during call to
"C:\Users\User\Documents\MATLAB\CARICOOS\SJ.m>SJ".

 Error in ==> SJ_F at 4
Data = SJ;

[Walter Roberson]

To check: is your variable name assigned to by the textscan() exactly the same as the variable name on the left side of the "=" in your "function" line? It looks like it is in what you posted, but please confirm in your original source.

You will probably have to put a breakpoint in at the textscan line, and check the value of "fid" and step once to have the textscan() executed, then check the workspace to confirm that it was assigned.