I can't wait to crunch some numbers...
...because a lot of the data used by scientific Distributed Computing projects through BOINC comes from things like this. Milkyway@home is using data from the Sloan Digital Sky Survey to build the most accurate map of our galaxy, Einstien@home uses data from radio telescopes (MEERKAT, Arecibo when it was active, etc.) plus LIGO to investigate objects of extreme gravity, and of course LHC@home is using real world data from CERN to not just process data from experiments but also model experiments before and after they are run.
My point is that there is going to be so much data that it will take decades to work through. Some scientists are even going back to data gathered by the Pioneer and Voyager missions and applying modern computing techniques so see things we couldn't see in the past. The money saved by the science teams and the quality of the results they get from volunteered processor time speak for themselves. And this a good thing in the era of carbon credits.