Fig. 3: Initial and normalized event productions.

Excess ¹⁴C produced during the events (blue) in comparison to the excess ¹⁴C production normalized to today’s geomagnetic field strength using two different records (orange Knudsen⁴¹, green Panovska⁴⁰) with 1-σ error bars for all known ¹⁴C events.