Fig. 4From: Earliest datable records of aurora-like phenomena in the astronomical diaries from BabyloniaAurora-like records compared with total solar irradiance anomaly. Black curve total solar irradiance anomaly from Steinhilber et al. (2009). Black vertical lines likely aurora records from the ADB. Gray vertical lines unlikely aurora records from the ADB. Black dashed vertical lines possible aurora records from the ADBBack to article page