Sorry, I didn't realize I could improve presentation by using Courier new. Here's the grid table again:
I cannot figure out why I am able to center "Heading 1" over the A and B columns but not "Heading 2" over the C and D columns:+--------+:------------:+-------------+--+:--------------:+-------------+
| | Heading 1 | | | Heading 2 | |
+--------+---+----+-----+-------------+--+----+------+----+-------------+
| | | | | | | | | | |
+--------+---+----+-----+-------------+--+----+------+----+-------------+
| | A | | B | Q | | C | | D | Q |
+--------+---+----+-----+-------------+--+----+------+----+-------------+
| T | 1 | | 121 | 61 | | 49 | | 64 | 56.5 |
+--------+---+----+-----+-------------+--+----+------+----+-------------+
| U | 1 | | 121 | 61 | | 49 | | 64 | 56.5 |
+--------+---+----+-----+-------------+--+----+------+----+-------------+
| | | | | | | | | | |
+--------+---+----+-----+-------------+--+----+------+----+-------------+
| V | 2 | | 22 | | | 14 | | 16 | |
+--------+---+----+-----+-------------+--+----+------+----+-------------+
| | | | | | | | | | |
+--------+---+----+-----+-------------+--+----+------+----+-------------+
| W | | 12 | | | | | 15 | | |
+--------+---+----+-----+-------------+--+----+------+----+-------------+
| | | | | | | | | | |
+--------+---+----+-----+-------------+--+----+------+----+-------------+
| X | 1 | | 121 | | | 49 | | 64 | |
+--------+---+----+-----+-------------+--+----+------+----+-------------+
| Y | | 61 | | | | | 56.5 | | |
+--------+---+----+-----+-------------+--+----+------+----+-------------+I'm attaching the output (not sure how else to include it here). But you can see what I mean if you copy/paste the above into pandoc.org/try, and then process with:pandoc --from markdown --to latex --standalone --no-highlight
Thanks for any guidance you might have!