Detailed presentation of the magnetic flux rope near its peak phase (at time of 16:48 UT on November 7). (a) Two sampled field lines near the axis of the rope. It clearly shows that the winding number of magnetic field lines exceeds three turns. (b) Side view of the field lines shown in the top panel. (c) Vertical cross-section of the MFR whose location is marked by the purple line in panel (a). The arrows show the directions of the transverse field on the slice, as they form spirals centered at the rope’s axis denoted by the red thick line. (d) Same cross section of the axis as in (c) but colored with T_w values, the axis located at the area where the T_w value is the largest.