<html><head><meta name="color-scheme" content="light dark"></head><body><pre style="word-wrap: break-word; white-space: pre-wrap;">\documentclass[a4paper]{article}
\usepackage{polski}
\usepackage{array,tabularx}
\usepackage[utf8]{inputenc}
\begin{document}

\newcolumntype{W}{&gt;{\raggedleft \arraybackslash}X}
\begin{tabularx}{\textwidth}{|l|W|W|r|W|W|}\hline
Substancja &amp; \multicolumn{2}{c|}{Wsp. genetyczny} &amp; Moc czynna \hfill&amp; \multicolumn{2}{c|}{Wsp. substancyjny}\\ 
 \cline{2-3} \cline{5-6}% \cline moÅ¼na wstawiaÄ‡ wielokrotnie
        &amp;  GY &amp; $\Psi^2$ &amp;  (hy) &amp; FY &amp; $\alpha'$ \\ \hline
dektura      &amp;  1,123 &amp;  8,1 &amp; 3,0 &amp; 6,5  &amp; 20,0 \\
liÅ›Ä‡ senesu  &amp; 45,000 &amp; 20,8 &amp; 5,1 &amp; 7,7  &amp; 15,0 \\
papa         &amp;  1,012 &amp;  7,5 &amp; 18,1 &amp; 6,9 &amp; 14,5 \\  \hline
\end{tabularx}


\end{document}
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