MATLAB: Matlab is storing all of the data in a 1×1 cell

.datdatetimeformatspecMATLABtextscantxt

I have a 'for' loop that opens a series of folders and is supposed to read the .dat files in them and extract columns of data from them. It makes a large DataArray that is supposed to have a separate column for each column of data, but it's storing all of the data in a single cell.
Here is where I extract the data:
textscan(FID,'%[^\n\r]', 4, 'ReturnOnError', false);
    formatSpecData = '%s%f%f%f%f%f%f%f%f%f%f%f%f%f%f%f%f%f%f'; % 16 columns of data
    DelimData = ' ';  % Delimited by tabs
    DataArray = textscan(FID,formatSpecData,31,'Delimiter',DelimData, ...
        'MultipleDelimsAsOne',true,'ReturnOnError',false); % The data has 31 points in it
    fclose(FID);
      Pressure = DataArray(:,3);
FID changes with each iteration of the for loop, and I know it's not what's causing the problem. Currently, my Pressure column is all NaN, and all of the data is stored in DataArray{1,1}, which is supposedly a 31×1 cell. In reality, it's stuffed all 19 columns and 31 rows in that cell.
I've attached a sample of the files I'm using. I've tried changing the FormatSpecData for the first column to %{hh:mm:ss.sss}T to recognize the format, but I get the error message
Unable to parse the format string at position 1 ==> %{hh:mm:ss.sss}T%f%f%f%f%f%f%f%f%f%f%f%f%f%f%f%f%f%f
Date formats must be of the form %T or %{...}T.
I've also tried 'D' and 'f' for the first column with no success.

Best Answer

With respect to your textscan call, you most likely need to add 'HeaderLines',5 to make it work:
DataArrayC = textscan(FID, ['%s' repmat('%f', 1, 18)], 'HeaderLines',5, 'CollectOutput',1);
However, I would let the readtable (link) function do all the work:
DataTable = readtable('Fileexample.txt');
That worked for me with your attached table.
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