Refined Products, Chemicals, Aromatics

May 01, 2026

Description and MDC updated for gasoline blend value symbols

The following gasoline blend value symbols have had their descriptions and MDC updated, as summarized below.

From:

MDC Symbol Bates Dec Freq Curr UOM Description
FS AASFE00 u 3 DW USC GAL Alkylate DAP USGC barge Blend Value
FS AASFE03 c 3 MA USC GAL Alkylate DAP USGC barge Blend Value MAvg
FS AASFG00 u 3 DW USC GAL Reformate DAP USGC barge Blend Value
FS AASFG03 c 3 MA USC GAL Reformate DAP USGC barge Blend Value MAvg
FS AASFH00 u 3 DW USC GAL Xylene FOB USGC barge Blend Value
FS AASFH03 c 3 MA USC GAL Xylene FOB USGC barge Blend Value MAvg
FS AASFI00 u 3 DW USC GAL Toluene FOB USGC Blend Value
FS AASFI03 c 3 MA USC GAL Toluene FOB USGC Blend Value MAvg
FS AATAR00 u 3 DW USC GAL MTBE FOB USGC barge Blend Value
FS AATAR03 c 3 MA USC GAL MTBE FOB USGC barge Blend Value MAvg
FS AATAS00 u 3 DW USC GAL Raffinate DAP USGC barge Blend Value
FS AATAS03 c 3 MA USC GAL Raffinate DAP USGC barge Blend Value MAvg

To:

MDC Symbol Bates Dec Freq Curr UOM Description
AU AASFE00 u 3 DW USC GAL Alkylate Blend Value vs NYMEX RBOB
AU AASFE03 c 3 MA USC GAL Alkylate Blend Value vs NYMEX RBOB MAvg
AU AASFG00 u 3 DW USC GAL Raffinate Blend Value vs NYMEX RBOB
AU AASFG03 c 3 MA USC GAL Raffinate Blend Value vs NYMEX RBOB MAvg
AU AASFH00 u 3 DW USC GAL Reformate Blend Value vs NYMEX RBOB
AU AASFH03 c 3 MA USC GAL Reformate Blend Value vs NYMEX RBOB MAvg
AU AASFI00 u 3 DW USC GAL MTBE Blend Value vs NYMEX RBOB
AU AASFI03 c 3 MA USC GAL MTBE Blend Value vs NYMEX RBOB MAvg
AU AATAR00 u 3 DW USC GAL Toluene Blend Value vs NYMEX RBOB
AU AATAR03 c 3 MA USC GAL Toluene Blend Value vs NYMEX RBOB MAvg
AU AATAS00 u 3 DW USC GAL Mixed Xylenes Blend Value vs NYMEX RBOB
AU AATAS03 c 3 MA USC GAL Mixed Xylenes Blend Value vs NYMEX RBOB MAvg

Please follow this link for further details.

If you have any comments or questions about this announcement, please contact S&P Global Energy Support team or email support.energy@spglobal.com.