Usable Capacity Remaining from InsightIQ

I know this has been asked many times in order posts but there does not seem to be a simple answer, or at least I have not found one on how you can extract the Usable Capacity Remaining from InsightIQ (from the FSA runs)

I need :

1. To be able to email a capacity report from InsightIQ that contains the “Usable Capacity”. From what Isilon support has told me, this is not possible.

2. To be able to extract the “Usable Capacity Remaining” figure from InsightIQ. From what I know, these reports are from the FSA runs on the Isilon’s and are stored in /ifs/.ifsvar/modules/fsa/. How can we obtain the "Usable Capacity Remaining” figure from this data?