here's the full table (without the vertical centering I'm looking for) :
In my opinion and taste, this looks clear and well organized. There's no confusion. Removing the lines would add some possible confusion. The problem aren't the vertical lines. The horizontal lines clearly show that the text isn't vertically centered in its cell. This is what I would like to fix.
Stefan Kottwitz wrote:Putting everything in cells with borders is rarely the case in good books but in printed excel tables when the full grid is printed, in cheap productions. How are tables in professional books in your field of work? Perhaps compare?
Are you a physics teacher? Did you ever made course plans? We're not talking about books or journal publications. The table I'm showing here is for a course plan, to be given to young students. Things need to be shown clearly to them, with visual supports since they're not experienced readers and they tend to confuse things. Also, conventions aren't the same in Europe (I guess you're in Germany) and in North America (I'm in Canada).
Here's the same tables without the horizontal lines :
While this output is nice to look at, it's a bit more confused than the first one. Removing the vertical lines would be worst.
And just for comparison, here's the original table made in my field, from all other workers. They don't use LaTeX. This was made with the "standard" and default MS Word (that I hate to death, you guess why!) :
Where I'm working (a huge education college), I'm the only one that uses LaTeX!