Open Access

Figure 2.


Download original image

(A) Sunspot numbers in solar cycles 23 and 24 and observation times of the SPIRIT, TESIS, and SWAP data (explanations in the text); (B) transmittance profiles for SPIRIT (solar maximum, data set 1, red line), TESIS (solar minimum, black line), and SWAP (rising phase of cycle 24, blue line).

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.