Figure 9. Site 998 paleolatitudes from discrete samples (circles). Also shown are the unbiased mean paleolatitudes (solid squares) and their standard errors (bars). A weighted best-fit line, with a fixed intercept at the present latitude of Site 998, is fit through the mean paleolatitudes. The slope of the line is -0.0114°/m, which corresponds to a rate of northward motion of ~22 km/m.y.