I believe you'll find omega equals 3,6 and 9 i believe this because you see this on all the labeling to do with omega ie, cod, salmon

Farino wrote in a comment on another answer, "Glenn,...You're quite well versed in science, do you know of any evidence to suggest which Omega is most likely to be?" Sorry, but the reason I hadn't posted an answer to this question myself is because this one goes to the limits of what I have learned about cosmology. So, I had to do a bit of research to refresh my memory. Ω is the cosmological constant. If Ω ≤ 1, then the universe does not have enough mass (gravity) to stop expansion. So the universe would continue to expand forever. If Ω > 1 then the Universe does have enough mass to stop expansion. So the universe would eventually collapse back in on itself. For decades, scientists did not know which of these two cases it was. However, in the late 1990's they finally got the answer. The universe is expanding too quickly for gravity to stop. So Ω < 1. The strange thing about the answer to this questions is that rate at which the universe is expanding. A universe that contained no mass should expand at a constant rate. Add any amount of mass at all to such a universe and the gravity generated by that mass should slow that rate of expansion. So, the gravity generated by the mass in our universe should be slowing the rate of expansion even if there is not enough to stop it. However, the rate of expansion in our universe is INCREASING. So, now the cosmologists are trying to figure out why.