Group the data into meaningful subsets and make it clear in what order it should be read. Hierarchy and grouping can be shown by using white space and indenting column headings.
A table is made up of classification variables and data values, either of these can be used to order your table depending on the context.
If the table is not ranked by data value and the classification variables have a natural order, like age or geography, keep this order in the table.
Additional guidance is available on the recommended standard presentation order of statistics
Put the variables that are most likely to be compared in columns, with the units, tens or hundreds beneath one another.
Where data are most likely to be compared between years
Where data are most likely to be compared between ages
Time should run from left to right or top to bottom.