Corrections for May 26, 2011

The following corrections were made on May 26, 2011

Symbol
Assessment Date
Original Assessment
New Assessment
Description

AAEUQ01c 01-Jan-11 106.07 106.09 OPEC Basket YTD MovAvg

AAEUQ03c 01-May-11 109.98 109.87 OPEC Basket MTD MovAvg

AAEUQ04c 27-May-11 106.38 106.92 OPEC Basket WTD MovAvg

IGAWE04u 14-May-10 101.4 106.9 CGA Natgas E Canada Working Stor

IGAWF04u 14-May-10 278.8 288.8 CGA Natgas W Canada Working Stor

IGAWG04u 14-May-10 380.2 395.7 CGA Natgas Canada Working Storag