One thing that I noted of interest in that table is that is doesn't tell you that galvanized steel is overlayed with a thin layer of Zinc. Also, it only address active stainless steel, and doesn't really show regular iron or steel. One other thing to remember is that in order for the galvanic reaction to occur, some sort of electrolyte needs to be present in order for the two metals to electrically couple (this is mentioned in the article you posted).
Where I am here in Colorado, atmospheric humidity is usually quite low (~20% most of the time), so that would slow any potential corrosion. Also, some sort of electrically resistive grease could be used between the two parts to further isolate them, which would also prevent moisture penetration.
PS - FWIW, I am an aerospace engineer and deal with this kind of stuff all the time for a living. IMHO, the table you posted is almost too basic and doesn't give you enough information about the reaction potential.
