Words in a column should be lined up to the left (left justified). Numbers in a column should be right justified, or lined up along the decimal point. Break vertical lists by a line space every few lines. Use vertical space, rather than solid lines, to divide columns. Give each column a clear, crisp heading. These should be understandable without reference to the text or any footnotes to the table. Separate column headings, or totals, from the rest of the table using a thin horizontal line. Make your numbers compact by limiting the number of places after the decimal point to no more than two unless absolutely necessary. Ensure that the numbers given do not imply a greater degree of accuracy than can be justified by the units of measurement or context.