Annual averages of the number of spots per group calculated before the regrouping of sunspot groups (circles), after regrouping (triangles), and manually counted number of spots from the magnification drawings of sunspot groups (diamonds). Uncertainties are only given for the values after regrouping and are obtained from the relative Poissonian error 1/, where n_counts are the number of all instances of all groups in a given year (groups count several times with different numbers of spots).