Download original image
Example of pen-plot magnetogram taken 31 July 1964. Plotting levels (in units of Gauss) are listed on the right side of image. The extension of lines beyond the solar limb indicate that during some scans, the image drifted off center of the scanning area. Courtesy R. Ulrich.
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.