110=>20, interp err = 0.0000e+00 220=>40, interp err = 0.0000e+00 340=>80, interp err = 0.0000e+00 480=>160, interp err = 0.0000e+00 5160=>320, interp err = 0.0000e+00 6320=>640, interp err = 0.0000e+00 7