[pdftex] Table in the PDF looks different whith the same tex file

[Prabhu]

Hi,

Please check the attached tex file and the pdf. In the tex file I am
creating a table.

Try to run “pdflatex SampleTable.tex” to see the PDF.

I ran my tex file twice and compared the two pdfs (SampleTable_First Run.pdf
and SampleTable_next run.pdf). They both are not similar.

To me it looks like second pdf is proper.  In the first pdf
(SampleTable_First Run.pdf) the header are not properly placed.

   1. I am not changing anything in the text file, then why in the next run
   the table in the pdf looks different?
   2. Please help me to correct this problem.



Note:

For the second run, I did not delete any intermediate files (like .aux,
.log…) generated during first run. If I delete the intermediate files then
for the next run the pdf looks like the first one.
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