WISCONSIN GAS LLC

FY: Dec 31 2005

Q: Sep 30 2005

Q: Jun 30 2005

Q: Mar 31 2005

FY: Dec 31 2004

Q: Sep 30 2004

Q: Jun 30 2004

Q: Mar 31 2004

FY: Dec 31 2003

Q: Sep 30 2003

Q: Jun 30 2003

Q: Mar 31 2003

FY: Dec 31 2002

Q: Sep 30 2002

Q: Jun 30 2002

Q: Mar 31 2002

FY: Dec 31 2001

Q: Sep 30 2001

Q: Jun 30 2001

Q: Mar 31 2001

8.01

8.01

1.01

8.01,9.01

1.01

5.02

1.01

1.01,9.01

1.01,9.01

2.05

5,7

5,7

5,7

7

5,7

5,7

5

5

5

4,7

No description available

Post-effective amendment to a registration statement

Post-effective amendment to a registration statement

Post-effective amendment to a registration statement

Post-effective amendment to a registration statement

Prospectus Supplement for Primary Offering

Prospectus Supplement for Primary Offering

No description available

Prospectus Supplement for Primary Offering

Registration statement under Securities Act of 1933

Prospectus Supplement with Pricing Information

Registration statement under Securities Act of 1933 (amendment)

Registration statement under Securities Act of 1933

Prospectus filed under Rule 424(b)(1)

Registration statement under Securities Act of 1933 (amendment)

Registration statement under Securities Act of 1933

Post-effective amendment filed solely to add exhibits