Probability of detecting a Continuous Wave (CW) signal from an individual MBH binary with a GW frequency in a given range, with an S/N greater than 3 for two toy PTAs representing the EPTA and the future SKA. Probabilities, shown as histograms, are derived from 2000 Universe realizations. The medians of the S/N distributions in each GW frequency band are overlaid, shown with dots (EPTA) and crosses (SKA). The frequency associated with the observation duration of the PTAs (10.33 years) is shown as a black vertical line.