Fig. 2: Cold-season temperature anomalies (with respect to 1851–1900) during the cold spell in the early 19th century in different reconstructions.
From: A decade of cold Eurasian winters reconstructed for the early 19th century

Anomalies in 1808/9–1815/6 in BRWCCC, BRWNCAR, ANACCC, ANANCAR, BRWEKF, and EKF400v2. Dashed (−1) and solid (+1) red lines express anomalies in standard deviations of the 1851–1900 period. The green dashed lines indicate a MSESS of 0.2 relative to EKF400v2 (the yellow dashed line in EKF400 indicates an MSESS of 0.2 relative to HadCRUT556, which is not spatially complete).