Statement of Net Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
OPERATING REVENUES:
Natural gas transportation	$ 106,145	$ 105,465	$ 218,166	$ 215,348
Natural gas storage	3,716	4,883	7,062	9,125
Other	(10)	15	(31)	(46)
Total operating revenues	109,851	110,363	225,197	224,427
OPERATING EXPENSES:
General and administrative	13,096	14,056	25,795	26,776
Operation and maintenance	19,546	20,598	35,045	36,913
Depreciation and amortization	27,821	26,830	55,881	53,607
Regulatory debits	290	178	581	358
Taxes, other than income taxes	3,714	4,450	7,834	7,848
Regulatory charges resulting from tax rate changes	5,879	5,879	11,693	11,693
Other (income) expenses, net	(3)	(120)	(5)	11
Total operating expenses	70,343	71,871	136,824	137,206
OPERATING INCOME	39,508	38,492	88,373	87,221
OTHER (INCOME) AND OTHER EXPENSES:
Interest expense	7,509	7,290	14,960	14,474
Allowance for equity and borrowed funds used during construction (AFUDC)	(322)	(750)	(620)	(1,256)
Miscellaneous other (income) expenses, net	(164)	(1,138)	(1,256)	(2,074)
Total other (income) and other expenses	7,023	5,402	13,084	11,144
NET INCOME	$ 32,485	$ 33,090	$ 75,289	$ 76,077