1\begin{table}[htbp]\centering\footnotesize2\caption{Regional sample: stores, listings, certification and assortment diversity}\label{tab:region_summary}3\begin{adjustbox}{max width=\textwidth}4\begin{tabular}{lrrrrrr}\toprule5Region & Stores & Listings & Median catalogue & Certified share & $\tilde H$ (M) & $\tilde H$ rarefied (15 stores) [2.5; 97.5] \\\midrule6Montréal & 237 & 61\,419 & 65 & 0.59 & 0.829 & 0.741 [0.639; 0.824] \\7Inconnue & 226 & 71\,692 & 77 & 0.07 & -- & -- \\8Montérégie & 177 & 57\,699 & 34 & 0.60 & 0.879 & 0.784 [0.680; 0.864] \\9Estrie & 165 & 16\,447 & 20 & 0.46 & 0.872 & 0.780 [0.684; 0.857] \\10Capitale-Nationale & 126 & 35\,555 & 26 & 0.42 & 0.875 & 0.786 [0.685; 0.872] \\11Chaudière-Appalaches & 102 & 11\,398 & 22 & 0.76 & 0.866 & 0.776 [0.671; 0.864] \\12Laurentides & 99 & 20\,004 & 35 & 0.59 & 0.877 & 0.799 [0.701; 0.874] \\13Saguenay--Lac-Saint-Jean & 97 & 15\,845 & 34 & 0.34 & 0.858 & 0.788 [0.702; 0.856] \\14Lanaudière & 66 & 8\,828 & 34 & 0.56 & 0.857 & 0.778 [0.699; 0.853] \\15Centre-du-Québec & 61 & 9\,356 & 19 & 0.41 & 0.852 & 0.780 [0.681; 0.858] \\16Bas-Saint-Laurent & 39 & 5\,750 & 34 & 0.49 & 0.855 & 0.803 [0.725; 0.869] \\17Outaouais & 36 & 33\,429 & 26 & 0.47 & 0.866 & 0.807 [0.725; 0.876] \\18Mauricie & 31 & 2\,521 & 27 & 0.42 & 0.822 & 0.772 [0.701; 0.835] \\19Gaspésie--Îles-de-la-Madeleine & 30 & 7\,514 & 28 & 0.30 & 0.780 & 0.741 [0.652; 0.819] \\20Laval & 25 & 6\,528 & 33 & 0.84 & 0.783 & 0.747 [0.659; 0.825] \\21Abitibi-Témiscamingue & 21 & 5\,206 & 36 & 0.38 & 0.914 & 0.887 [0.855; 0.912] \\22Côte-Nord & 16 & 587 & 18 & 0.38 & 0.735 & 0.731 [0.704; 0.750] \\23Nord-du-Québec & 3 & 276 & 27 & 0.00 & 0.661 & -- \\24\bottomrule\end{tabular}25\end{adjustbox}26\begin{minipage}{0.95\textwidth}\vspace{2pt}\footnotesize\textit{Notes:} Assortment sample. $\tilde H$ = normalised Shannon entropy of category shares (20 categories); M = merchant-equal weights. Rarefied entropy = mean over 2\,000 draws of 15 stores without replacement; brackets give the 2.5th and 97.5th percentiles of the draws. `Inconnue' = stores whose location could not be established (excluded from regional inference).\end{minipage}27\end{table}28