Hide or make the radon monitor column optional per instance (e.g. not needed in Florida)

Users want the radon monitor count column to be optional or hideable per instance. In regions like Florida where radon isn't relevant, the column clutters the view; schedulers and staff are asking for a way to turn it off or hide it so they only see the fields they use.

Why it matters: Showing columns that don't apply to a region adds noise and can confuse users; letting each instance show only what's relevant keeps the interface focused.