  Weak measurements with imaginary weak values are reexamined in light of
recent experimental results. The shift of the meter, due to the imaginary part
of the weak value, is derived via the probability of postselection, which
allows considering the meter as a distribution of a classical variable. The
derivation results in a simple relation between the change in the distribution
and its variance. By applying this relation to several experimental results, in
which the meter involved the time and frequency domains, it is shown to be
especially suitable for scenarios of that kind. The practical and conceptual
implications of a measurement method, which is based on this relation, are
discussed.
