Absolutely...this is why when we use the 1991-2020 climo period to measure older analogs, there is a sea of greater heights that washes everything out. This is why I use the 1951-2010 climo period quite often...but of course, it goes both ways. If you use a more recent analog for that period, then its a sea of blue. I try use that all encompasing 1951-2010 climo period when the composite is comprised of a wider range of years....like seasonal forecast composites, for instance.