I might add as a caveat that those numbers are estimates, as pointed out in the comments on the linked article. While they are fair ballparks, a 20% give or take would not surprise me. We won't know for sure until block 1010000...

@Scalextrix also mentioned I should clarify that when I said:

If you do not stake research within six months of completing it, payment is lost.

that is a rolling loss. As in, if the individual unit of research was done 6 months ago, it is lost. Not your entire research to date.