The table now eschews shading every row (light blue, dark blue, light blue, etc). But surely such shading helps us scan across rows in a big table without losing our place. No. Such shading is a huge visual distraction, it makes numbers tougher to read. After all, would you prefer this email if it had light blue, dark blue shading along every row of text?!
As for scanning across rows in a big table, there are two ways to help readers, neither of which require distracting shading:
Have a horizontal line every row. Make the line thin and grey - and don't have vertical lines. See the first five data rows in the above table.
Or: have an empty row every four or five rows. Not a 'full' empty row, but one that's a third - or half - the usual row-height. It breaks the table into groups of four or five as you run down the page. Result: readers don’t lose their place when reading across the page.
But the bottom half of Figure 2 doesn’t do this. Rather, gaps arise when there’s a new topic (Drunken Acts, then Fights, etc). Which works if there are such groupings within the rows. Here, there are, so it’s what I’ve done.
(Figure 2 shows both ways - horizontal lines and gaps every few rows. It's merely to illustrate. Don’t do both in the same table, of course.)
Notice four other small changes from Figure 1 to Figure 2. (1) It’s Nov 21, not Nov-21… why the dash? (2) ‘0’ is now ‘-‘, it’s less intrusive (maybe explain this convention to readers if there’s a risk they'll be confused by a ‘-‘). (3) I’ve greyed down column headings and put them in a smaller font. They’re de-emphasised. The key bit of a table isn't the column headings, it’s the numbers. So, given this, it’s weird that many tables have column headings that are funky, colourful... and visually intrusive.
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