Central velocities for the blueshifted and redshifted clusters found using the methods described in Appendix F. The colorbar from yellow to blue corresponds to the velocities for blueshifted cluster, whereas from yellow to red corresponds to the redshifted cluster. The black ellipse in the bottom left corner represents the beam size. The black star represents the position of the protostar. The black dashed circle (only seen at the corners) represents the size of the primary beam. We note that the velocity ranges for both envelope components are not symmetric.