QUARTERLY FINANCIAL DATA (unaudited) (Tables)

12 Months Ended

Dec. 31, 2011

QUARTERLY FINANCIAL DATA (unaudited)

Schedule of quarterly financial data

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.