function [sampleN, sample, hours, minutes, seconds] =...
  readtextdata_eg_function(filename)


fid = fopen(filename);			%open file
fgetl(fid);						%Skip header line
fgetl(fid);
data = fscanf(fid,'%d %d:%d:%d %f',[5 10]);	%read data
fclose(fid);  % close the file

% now split the data into separate variables
sampleN = data(1,:);
hours = data(2,:);
minutes = data(3,:);
seconds = data(4,:);
sample = data(5,:);