First four principal components for the January and February epochs for the first CO (plots a and b) and the second CO band heads (plots e and f). The relative scale of the structures in the eigenimages is displayed with a color bar at the bottom of each panel. Only the central 20 mas of the eigenimages are shown in each panel. The white contours correspond to the mean image across wavelength (per given data set) and they represent 10, 30, 50, 70, 90, 95, 97, and 99% of the intensity’s peak.