  Fluctuations in the ratio of neutral to charged pions arising due to
formation of disoriented chiral condensates (DCC) are discussed using the
Phi-measure. The properties of the measure for various cases of DCC and non-DCC
are discussed. The effect of detector efficiencies and other experimental
factors are presented. Application of the Phi-measure to simulated data, within
the context of a simple DCC model are also discussed.
