A system for electrophysiological measurement, comprising: a probe having a distal end configured for insertion into a body cavity of a living subject and comprising an array of electrodes that are disposed along the distal end and are configured to contact tissue at multiple locations within the body cavity; and a processor configured: to acquire signals from the electrodes over a period of time during which the probe moves within the body cavity, to compute, in response to the signals, metrics that are indicative of a respective quality of contact between each of the electrodes and the tissue over the period of time, wherein the metrics are indicative of a respective duration during which each of the electrodes was in contact with the tissue in the body cavity over the period of time, to render to a display a graphical icon, characterised in that the graphical icon comprises a represention of the distal end of the probe including respective locations corresponding to locations of each of the electrodes on the distal end, and to incorporate in the graphical icon superimposed markings at the respective locations on the representation of the distal end corresponding to the locations of the electrodes on the distal end, wherein each of the markings visually indicates the metric for the electrode at the corresponding location on the distal end. a probe having a distal end configured for insertion into a body cavity of a living subject and comprising an array of electrodes that are disposed along the distal end and are configured to contact tissue at multiple locations within the body cavity; and a processor configured: to acquire signals from the electrodes over a period of time during which the probe moves within the body cavity, to compute, in response to the signals, metrics that are indicative of a respective quality of contact between each of the electrodes and the tissue over the period of time, wherein the metrics are indicative of a respective duration during which each of the electrodes was in contact with the tissue in the body cavity over the period of time, to render to a display a graphical icon, characterised in that the graphical icon comprises a represention of the distal end of the probe including respective locations corresponding to locations of each of the electrodes on the distal end, and to acquire signals from the electrodes over a period of time during which the probe moves within the body cavity, to compute, in response to the signals, metrics that are indicative of a respective quality of contact between each of the electrodes and the tissue over the period of time, wherein the metrics are indicative of a respective duration during which each of the electrodes was in contact with the tissue in the body cavity over the period of time, to render to a display a graphical icon, characterised in that the graphical icon comprises a represention of the distal end of the probe including respective locations corresponding to locations of each of the electrodes on the distal end, and to incorporate in the graphical icon superimposed markings at the respective locations on the representation of the distal end corresponding to the locations of the electrodes on the distal end, wherein each of the markings visually indicates the metric for the electrode at the corresponding location on the distal end.