# Can I average the two RMM values?

The RMM values are sometimes quite different. Can I average the values of RMM1 and RMM2 and use it as an index for MJO?

If you want a more meaningful way to interpret the MJO, you can try $$\sqrt{RMM_1^2+RMM_2^2}$$ which should be the strength of the MJO, or the angle between $$RMM_1$$ and $$RMM_2$$ (probably using something like atan2 in your preferred programming language.