More backfilled petrochemical monthly averages

Effective May 17, 2011, the following monthly average symbols have been backfilled.

HP AAQCB03 hl 2 MA EUR MT LLDPE C6 Blown FD NWE CP MAvg from February 1, 2009, through April 1, 2011

HP AAQCC03 hl 2 MA EUR MT LLDPE C6 CSF FD NWE CP MAvg from February 1, 2009, through April 1, 2011

HO AAYDF03 c 2 MA USD MT Cracker Margin NWE CP $/Mt MAvg from February 1, 2008, through April 1, 2011

HF AAVAR03 hl 2 MA USD MT Toluene FOB SE Asia Wk MAvg

HF AAVBQ03 hl 2 MA USD MT Toluene CFR India Wk MAvg from January 1, 2008, through April 1, 2011

HF AAVBP03 hl 2 MA USD MT Methanol Dom China $/Mt Wk from January 1, 2008, through April 1, 2011

HO AAUXJ03 hl 2 MA USD MT Propylene FOB Korea Dly $/Mt from April 1, 2010, through April 1, 2011