How do we save the information on guide errors in the operational database?

Currently, it has a place holder for average guide error (guideError_dx and guideError_dy).

The questions are following:

• Do we need to save the information of raw images?
• Do we need the information of an individual guide star?
• Can we save them in Exposure or Visit table?

Confirm how we manage the information of the guide errors in the current framework of opDB. If no, propose something alternative adding a new table if necessary.