QUARTERLY FINANCIAL DATA (unaudited)

12 Months Ended

Dec. 31, 2011

QUARTERLY FINANCIAL DATA (unaudited)

NOTE 13 QUARTERLY FINANCIAL DATA (unaudited)

The following sets forth selected unaudited financial data for the four quarters in 2011 and 2010:

Quarter ended (millions of dollars except per common unit amounts)	Mar 31	Jun 30	Sep 30	Dec 31


2011
Equity income^(a)	38.6	37.5	40.4	37.0
Transmission revenues	17.3	17.6	17.6	17.9
Net income^(a)	42.3	36.1	40.7	38.3
Net income per common unit	$0.90	$0.69	$0.75	$0.70
Cash distributions paid	35.4	35.4	42.0	42.0

2010
Equity income	30.9	25.3	35.6	34.2
Transmission revenues	17.4	17.0	17.4	17.3
Net income	33.7	27.7	38.6	37.1
Net income per common unit	$0.71	$0.59	$0.82	$0.79
Cash distributions paid	34.4	34.4	34.4	35.4

^(a): Includes equity earnings from GTN and Bison from May 3, 2011, date of acquisition, to December 31, 2011.

- Definition

The entire disclosure for the quarterly financial data in the annual financial statements. The disclosure may include a tabular presentation of financial information for each fiscal quarter for the current and previous year, including revenues, gross profit, income or loss before extraordinary items and earnings per share data. It also includes an indication if the information in the note is unaudited, comments on the aggregate effect of year-end adjustments, and an explanation of matters or transactions that affect comparability or are pertinent to an understanding of the information furnished.

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