LONDON, March 29 (Reuters) – Robust Asian demand and favourable U.S. gasoline cracks prompted sellers of Nigerian lighter grades to push up differentials, but some potential European buyers awaited markdowns. U.S. sanctions on Venezuelan exports continued to support high differentials for comparable medium-heavy Angolan grades.

Source: http://feeds.reuters.com/~r/reuters/AfricaNigeriaNews/~3/QEvA6RshHoY/idAFL8N21G6C8