Question: How do I convert my line graphs into grouped bar charts?

I have already plotted the Nusselt number as a line graph. Now, I would like to plot it as a bar graph instead of line graphs. Specifically, I want to create grouped bar charts that combine several parameters (such as Gr, Rb, N[t], N[r], M, Sc) in a single figure. Each group should correspond to one parameter, with bars representing distinct values (e.g., 0.1, 0.4, 0.6, 0.8). For reference, I have attached a sample figure from another work. Could anyone please help in this regard?

Group_bar_graphs_help.mw

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