Figure 11. Paleolatitudes for each secular variation (SV) unit (squares) with 95% confidence limits (bars). The mean paleolatitudes and their 95% confidence limits are shown at the top. The solid star is the unbiased mean that makes no assumptions about the polarity of the SV units, whereas the open star is the mean assuming all the SV units were extruded during a period of constant, normal polarity.