Summary of the predicted time and sunspot number at maximum for cycles 22 (upper panel), 23 (mid panel) and 24 (lower panel) predicted from different phases of the previous cycle. The error bars are taken between the first and third quartiles of the distributions of t_max and SSN_max given in Table C.1. The second quartiles (i.e., median values) are indicated as dots and mean values as stars located at the intersection of the error bars. The cyan dots indicate the true values of the maximum with error bars on the sunspot number. For all cycles, two cyan dots are present, representing the two peaks of similar amplitude in the different cycles, visible on the 13 month smoothed sunspot number (red curves of Figs. 5, C.1, and C.2).