EXHIBIT 28.A First Chicago Credit Card Master Trust II Excess Spread Analysis - May 2002 - ---------------------------------------------------------------------------------------------------------------------------------- Series 95-M 95-O 96-S 97-U 99-X 99-Y Deal Size $500MM $500MM $700MM $400MM $750MM $550MM Expected Maturity 10/15/02 12/16/02 12/16/02 10/15/02 6/16/03 8/15/03 - ---------------------------------------------------------------------------------------------------------------------------------- Yield 20.27% 20.27% 20.27% 20.27% 20.27% 20.27% Less: Coupon 2.10% 2.10% 2.02% 2.00% 2.09% 2.10% Servicing Fee 1.50% 1.50% 1.50% 1.50% 1.50% 1.50% Net Credit Losses 6.09% 6.09% 6.09% 6.09% 6.09% 6.09% Excess Spread: May-02 10.58% 10.58% 10.67% 10.68% 10.59% 10.59% April-02 9.76% 9.75% 9.84% 9.86% 9.77% 9.76% March-02 11.07% 11.06% 11.15% 11.17% 11.08% 11.07% Three Month Average Excess Spread 10.47% 10.47% 10.55% 10.57% 10.48% 10.47% Delinquency: 30 to 59 Days 1.17% 1.17% 1.17% 1.17% 1.17% 1.17% 60 to 89 Days 0.84% 0.84% 0.84% 0.84% 0.84% 0.84% 90+ Days 1.59% 1.59% 1.59% 1.59% 1.59% 1.59% Total 3.60% 3.60% 3.60% 3.60% 3.60% 3.60% Payment Rate 33.04% 33.04% 33.04% 33.04% 33.04% 33.04% ==================================================================================================================================