It lets the viewer know it's something to do with underwater.
Answer:
499.523. meter
<em>I</em><em> hope</em><em> it's</em><em> helps</em><em> you</em>
At the same time, however, you get less detail or less precision in a chart or graph than you do in the table. Imagine the difference between a table of sales figures for a ten-year period and a line graph for that same data. You get a better sense of the overall trend in the graph but not the precise dollar amount.
