Weak Brent oil futures contrast with scarce physical supplies

* Supplies of almost all physical grades in Europe tight* Refining margins strong and not pointing to poor demand* Values for both light and heavy grades rallyBy Dmitry ZhdannikovLONDON, July 4 (Reuters) – The weak prices of European benchmark Brent crude futures contrast increasingly with...Weak Brent oil futures contrast with scarce physical supplies