The graze zone is typically five to ten kilometers wide and its interior and exterior boundaries can be predicted using the lunar limb profile. Table 6 provides topocentric data and corrections to the path limits due to the true lunar limb profile. At five minute intervals, the table lists the Moon's topocentric horizontal parallax, semi-diameter, relative angular velocity of the Moon with respect to the Sun and lunar libration in longitude. The Sun's center line altitude and azimuth is given, followed by the azimuth of the umbral path. The path corrections to the northern and southern limits are listed as interior and exterior components in order to define the graze zone.
Positive corrections are in the northern sense while negative shifts are in the southern sense.
Corrections to the center line umbral durations due to the lunar limb profile are also included and they are all negative. Table 8 directly tabulates the coordinates of the zones of grazing eclipse at each limit along all land based sections of the path. The coordinates are given every 7.5' in longitude and include the time of maximum eclipse in the northern and southern graze zones as well as on the center line. In practice, a location's elevation in multiplied by the Elevation Factor to obtain the shift. Thus, the observer must shift the path coordinates 200 meters in a direction perpendicular to the path and in a negative or southerly sense.