Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 1996
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996pkas...11..251s&link_type=abstract
Publications of the Korean Astronomical Society, vol.11, no.1, p.251-261
Astronomy and Astrophysics
Astronomy
Scientific paper
We analyze 280 data of the daily sunspot observations during the period of January 1 to December 31 in 1995 and present the daily relative sunspot numbers. During the 1995, the preliminary annual average of the relative sunspot numbers is found to be 20.1 based on 7.9 distinct spots in a single group for 1.3 spot groups. According to the appearance of 366 spot groups, our analysis shows that the mean life time of spot group is about 5 days and 10.1 hours.
Moon Hong-Kyu
Sim Kyung Jin
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