A compressor has been designed for entrance conditions of \(14.7 \mathrm{psia}\) and \(70^{\circ} \mathrm{F}\). To economize on the power required, it is being tested with a throttle in the entry duct to reduce the entry pressure. The characteristic curve for its normal design speed of \(3200 \mathrm{rpm}\) is to be obtained on a day when the ambient temperature is \(58^{\circ} \mathrm{F}\). At what speed should the compressor be run? At the point on the characteristic curve at which the mass flow would normally be \(125 \mathrm{lbm} / \mathrm{s}\), the entry pressure is \(8.0 \mathrm{psia}\). Calculate the actual mass flow rate during the test.