Fig. 4
From: Solar superstorm of AD 774 recorded subannually by Arctic tree rings
Early- and latewood 14C measurements of the ME. The horizontal axis represents the calendar year of the growing season, and the vertical axis represents the age-corrected Δ14C. To visualize the average temporal difference between early- and latewood growth, the data points are set to June and August, respectively, for each calendar year. The baseline is defined as the average 14C of AD 770–773. The uncertainties are based on 14C counting statistic and error propagation and they represent one standard error
