Fig. 2From: A reappraisal of instrumental magnetic measurements made in Western Europe before AD 1750: confronting historical geomagnetism and archeomagnetismSame legend as in Fig. 1 but with all individual historical D, I measurements made in Western Europe before AD 1750. a Measurements made in London (yellow circles), Paris (pink circles) or vicinities and in Rome (red circle). b All other available measurements (information on the figure)Back to article page