SUBSCRIBER NOTE: Platts corrects daily Northwest, Wyoming Pool index from January 1 - 11

Please note that due to an internal error, S&P Global Platts has corrected all preliminary and final daily January flow date values for Gas Daily Northwest, Wyoming Pool, from trade date 12/29/2017 to 1/10/2018, impacting flow dates from 1/1/2018 to 1/11/2018.

Trade Date: Index Deals Volume

12/29/2017 (Flow dates 1/1-1/2/2018) $3.345 81 453 01/02/2018 (Flow 1/3/2018) $4.835 46 249 01/03/2018 (Flow 1/4/2018) $5.32 31 155 01/04/2018 (Flow 1/5/2018) $3.165 47 255 01/05/2018 (Flow 1/6-1/8/2018) $2.465 73 392 01/08/2018 (Flow 1/9/2018) $2.45 58 309 01/09/2018 (Flow 1/10/2018) $2.46 53 249 01/10/2018 (Flow 1/11/2018) $2.565 56 344

Please contact Ryan Ouwerkerk at 713-655-2202 or ryan.ouwerkerk@spglobal.com with any questions.