Format of combined data for individual sunspot groups 1-4 Year 6-7 Month 9-10 Day (the date when the group area was maximal is given) 12-18 The extended number of the group in format YYYYNNN, where YYYY is the year of the catalogue volume, NNN is the number of spot in the volume. 20-24 Heliographic longitude 26-30 Latitude 32-36 Second heliographic longitude (999.9=no data) 38-42 Second latitude (999.9=no data) 44-47 Average group area, in millionths of solar hemisphere (9999=no data) 49-52 Average area of the largest spot (9999=no data) 54-56 Average number of spots in the group (999=no data) 58-59 Length of observation time of the group in days