Relation between spin vector obliquity and rotation frequency of the Flora (blue and red dots) and the Koronis (green and brown squares) family members. Dots and squares of different pattern represent stray objects, that does not seem to fit to the grouping The abscissa are defined with the same convention as in Slivan (2002). The error bars for the rotational frequency lie within the marked symbols and are several degrees for the spin vector obliquity (see Table 1).