Corrections of the total areas of sunspots in the Greewich photoheliographic results for 1960

In the 'Greenwich Photoheliographic Results' for 1960 the total areas of sunspots are given incorrectly for about one third of days in the first quarter of 1960. The correct values of sunspot areas for these days are given as well as the corresponding correct values of the monthly means, the annual mean and the means by synodic revolutions of the total areas of sunspots. (author)