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tables - \usepackage[group-separator={,}]{siunitx} Not working with longtable? - TeX - LaTeX Stack Exchange
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tabularx - Latex pop up error Misplaced \omit. \multispan ->\omit@multispan for Table in Elsevier cas-sc template - TeX - LaTeX Stack Exchange
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siunitx - Format table with aligned values +/- errors and units (and parentheses) - TeX - LaTeX Stack Exchange
![errors - longtable+ltxtable = ! Extra alignment tab has been changed to \cr - TeX - LaTeX Stack Exchange errors - longtable+ltxtable = ! Extra alignment tab has been changed to \cr - TeX - LaTeX Stack Exchange](https://i.stack.imgur.com/PUj0e.png)