What does the fourth april tag mean?

In The Pits
1

We were looking at the concept April tag and there was some April tag along the name of
“Blue/Red Alliance Audience Big/Small” we were just curious about how this would be used in the game, and any scoring elements related to this.

2

If you look at the field, there are 6 AprilTags on the Backdrops and 4 on printed sheets mounted on the backside of the Audience wall.

I’m recalling this from memory, so please don’t scream if I get this wrong (i.e. Verify for yourself):

Tags 1-3 are Blue Alliance Backdrop Tags, and they are 2-inch tags (small).
Tags 4-6 are Red Alliance Backdrop Tags, and they are 2-inch tags (small).
Tag 7 is a Red Alliance Audience Wall Tag, and is a 5-inch tag (large).
Tag 8 is a Red Alliance Audience Wall Tag, and is a 2-inch tag (small).
Tag 9 is a Blue Alliance Audience Wall Tag, and is a 2-inch tag (small).
Tag 10 is a Blue Alliance Audience Wall Tag, and is a 5-inch tag (large).

Each tag number is the tag ID returned by the AprilTag API.

-Danny