Gas gauges are pictured at Wiener Netze (Viennese Energy Supply Company), Vienna's gas distribution node, in the Erdberg district of Vienna September 19, 2014. Russian gas flows to Austria have fallen this month, with Reuters data showing a sharp drop from 560 gigawatt-hours per day (GWh/d) at the beginning of September to as low as 460 GW/d a week later, although flows have since recovered to 600 GWh/d. REUTERS/ Leonhard Foeger (AUSTRIA - Tags: POLITICS ENERGY BUSINESS)