Figure 10.
Maps of the reduced eligible TG flows 
extracted with p = 25 at epochs 1890.0, 1920.0, 1950.0 and 1980.0. See Table 4 for their properties. Contours of ζ (= Br/cos θ) and the local vector coincidence index 
are also plotted.
Maps of the reduced eligible TG flows extracted with p = 25 at epochs 1890.0, 1920.0, 1950.0 and 1980.0. See Table 4 for their properties. Contours of ζ (= Br/cos θ) and the local vector coincidence index are also plotted.
