Natural gas having a specific gravity relative to air of 0.60 and a viscosity of 0.011 cP is flowing through a 6-in. Schedule 40 pipe in which is installed a standard sharp-edged orifice equipped with flange taps. The gas is at 100°F and 20 lb_ƒ/in.² abs at the upstream tap. The manometer reading is 46.3 in. of water at 60°F. The ratio of specific heats for natural gas is 1.30. The diameter of the orifice is 2.00 in. Calculate the rate of flow of gas through the line in cubic feet per minute based on a pressure of 14.4 lb_ƒ/in.² and a temperature of 60°F.