15 The above issues were refunded with following bond issues: * 1998 Series A Adjustable Rate Pollution Control Bonds, $31,500,000, presently at a 3.65% interest rate, due 2025 * 1998 Series B Fixed Rate Pollution Control Bonds, $4,640,000, presently at a 4.4% interest rate, due 2020 * 1998 Series B Fixed Rate Pollution Control Bonds, $22,000,000, presently at a 4.4% interest rate, due 2030 * 1998 Series C Adjustable Rate Pollution Control Bonds, $22,200,000, presently at a 3.7% interest rate, due 2030 The interest rates on the 1998 Series A and C Adjustable Rate Pollution Control Bonds are fixed through February 28, 1999. The interest rates on the Series B Fixed Rate Pollution Control Bonds are fixed through February 28, 2003. The Series A and C Adjustable Rate Pollution Control Bonds are subject to tender on March 1, 1999 and accordingly, are presented as current liabilities on the financial statements. The Series B Fixed Rate Pollution Control Bonds are subject to tender March 1, 2003. In January 1998, SIGECO borrowed $20 million under a floating rate long term bank note, due April 1, 1999, and refunded an equal amount of short-term bank notes. The interest rate, presently 6.3% will be reset every 90 days based upon the 90-day LIBOR plus 62.5 basis points 5. Earnings Per Share The following table illustrates the basic and diluted earnings per share calculations. Three Months Ended Three Months Ended March 31, 1998 March 31, 1997 Net Per Share Net Per Share Income Shares Amount Income Shares Amount (in thousands except for per share amounts) Basic EPS $16,426 23,631 $0.70 $13,113 23,631 $0.55 Effect of dilutive securities 96 44 Diluted EPS $16,426 23,727 $0.69 $13,113 23,675 $0.55 Basic earnings per common share were computed by dividing net income by the weighted average number of shares of common stock outstanding during the year. Diluted earnings per common share were determined using the treasury stock method for dilutive stock options. 6. Comprehensive Income Effective January 1, 1998, SIGCORP adopted Statement of Financial Accounting Standards No. 130, "Reporting Comprehensive Income", which requires expanded disclosures regarding financial results. The following table is presented to comply with this new standard: Three Months Ended March 31, 1998 March 31, 1997 (in thousands) Net Income $ 16,426 $ 13,113 Unrealized gains or losses on marketable securities - - Comprensive income $ 16,426 $ 13,113