The following table shows Nigeria and Equatorial Guinea’s official selling prices for crudes in May as a differential against Dated Brent. The information is based on a price list obtained by Bloomberg News yesterday. Prices are in dollars. ---------------------------------------------------------------- Grade May April Change Nigeria Abo Light +1.00 +1.20 -0.20 Agbami +0.55 +0.70 -0.15 Akpo +0.50 +0.65 -0.15 Amenam Blend +1.85 +2.00 -0.15 Antan Blend +1.20 +1.35 -0.15 Bonga +2.95 +2.90 +0.05 Bonny Light +2.60 +2.65 -0.05 Brass Blend +2.60 +2.65 -0.05 EA Blend +3.70 +3.80 -0.10 Ebok -5.25 -5.00 -0.25 Erha +3.00 +3.00 0.00 Escravos Light +2.30 +2.40 -0.10 Forcados Light +3.95 +4.00 -0.05 Ima +0.50 +0.60 -0.10 Obe +1.15 +1.25 -0.10 Okono Blend +2.30 +2.40 -0.10 Okoro +1.25 +1.30 -0.05 Okwori +2.30 +2.40 -0.10 Okwuibome -3.75 -3.50 -0.25 Oyo +1.15 +1.20 -0.05 Pennington +4.05 +4.15 -0.10 Qua Iboe Light +2.60 +2.65 -0.05 Ukpokiti +0.55 +0.70 -0.15 Usan -0.85 0.00 -0.85 Yoho Light +2.60 +2.65 -0.05 Equatorial Guinea Zafiro +1.15 +1.50 -0.35 ---------------------------------------------------------------- To contact the reporter on this story: Sherry Su in London at lsu23@bloomberg.net To contact the editor responsible for this story: Stephen Voss at sev@bloomberg.net

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