I filed jointly with my husband last year, but need to calculate only my 2016 AGI for the FASFA because we are separated. How can I do that?

In filling out the FASFA, I have to use only my income information because my husband and I are separated and my daughter lives with me. We filed a joint return last year.  I know my income, but how do I know what deductions to make to calculate an AGI for just me?