Graphical evidence for the solar coronal structure during the Maunder minimum: comparative study of the total eclipse drawings in 1706 and 1715Hisashi Hayakawa, Mike Lockwood, Matthew J. Owens, Mitsuru Sôma, Bruno P. Besser and Lidia van Driel-GesztelyiJ. Space Weather Space Clim., 11 (2021) 1DOI: https://doi.org/10.1051/swsc/2020035