Original series by Hoyt & Schatten 1998: daily mean group number info.

GNhs_d.txt (drop last column)

Daily group number from the original series by Hoyt & Schatten 1998.

(-1 values indicate "no data")

Col 1: Year
Col 2: Month
Col 3: Day
Col 4: Date in decimal year (middle of month)
Col 5: Group number Gn
Col 6: Standard error Eg
Col 7: Number of observations