European natural gas storage inventories are lower than previously reported after data published by Gas Infrastructure Europe (GIE) was revised late Monday to include missing information from Italian sites.

GIE said in an update on its website late Monday that Snam SpA provided previously unreported data from its Stogit storage facility for a period running from Dec. 1 to Jan. 8. “All higher level aggregate datasets on country and European Union level have been retroactively recalculated,” GIE said. Stogit is one of Europe’s largest storage facilities. It utilizes nine depleted gas fields in Italy.

European Union storage data was revised lower by two percentage points and was at 51.6% of capacity on Sunday, the latest figures available. Stocks have trended at around 56% of...