SINGAPORE (Reuters) - Pakistan State Oil (PSO) is seeking up to 200,000 tonnes of gasoline for July-August delivery, a tender document showed on Monday. The volume is much higher than the 120,000 tonnes of gasoline it sought for the April-June quarter. In the same tender, PSO is also seeking up to 49,500 tonnes of jet fuel for August-September delivery. The tender closes June 22 with bids valid until June 25.