  Experimental progress with meso- and macroscopic quantum states (i.e.,
general Schrodinger-cat states) was recently accompanied by theoretical
proposals on how to measure the merit of these efforts. So far, experiment and
theory were disconnected as theoretical analysis of actual experimental data
was missing. Here, we consider a proposal for macroscopic quantum states that
measures the extend of quantum coherence present in the system. For this, the
quantum Fisher information is used. We calculate lower bounds from real
experimental data. The results are expressed as an "effective size", that is,
relative to "classical" reference states. We find remarkable numbers of up to
70 in photonic and atomic systems.
