The .62 was realized because its in the taxable income (the 1.61 net taxable income is .62 higher than the GAAP net income of .99). It goes on to give a quick review of the differences between GAAP & Tax basis accounting.
"The primary differences between tax and GAAP net income are (i) unrealized gains and losses associated with interest rate swaps and other derivatives and securities marked-to-market in current income for GAAP purposes, but excluded from taxable income until realized or settled, (ii) temporary differences related to the amortization of premiums paid on investments and (iii) timing differences in the recognition of certain realized gains and losses."
If the gains were not realized, than they would not be in the taxable income. Make sense?