From top to bottom, panels show the estimated distance, propagation direction and speed of the tracked Feature 2 using the GT, TAS and SSSE methods. In the middle and bottom panels, the direction and speed estimates from the single-spacecraft fitting methods are also overplotted. In these panels, dashed and dashed-dotted lines correspond to estimates from STEREO-A and STEREO-B observations, respectively. For these lines, the colors red, blue and green correspond to FPF, HMF and SSEF methods. In the middle panel, dashed horizontal line (black) marks the Sun-Earth line.