Cliver & Ling 2016, "error testing" group number: daily group number info.

GNec_d.txt

Daily group number from the Cliver & Ling (2016) reconstruction.

(-1 values indicate "no data").
Currently, no standard error values or number of daily observations are available.

Col 1: Year
Col 2: Month
Col 3: Day
Col 4: Date in decimal year (middle of month)
Col 5: Group number Gn