[O-08] Poster presentations by senior high school students

[O08-P51] Verification of the accuracy of our sunspot observation data and its utilization

*Riku Watai¹, Ryusei Ito¹, *Manato Okayama¹, Mayuko Ogawa¹, Ashitaka Oguchi¹, Chisato Kikuchi¹, Sotaro Kitajima¹, *Akihiro Kodaira¹, Kotoha Suzuki¹, Tadashi Nakazawa¹, Aya Hanamizu¹, Shota Ito¹, Hana Sakai¹, Natsuki Nakamura¹, Shiika Miyasaka¹, Masato Yokouchi¹ (1.NAGANO SUWA SEIRYO HIGH SCHOOL)

Sunspot observations have continued at the School for 74 years. In order to verify the uncertain accuracy of the data due to the decrease in the number of observation days caused by the coronal disaster, the relationship between the relative number of sunspots at the school and the determined values for the most recent 9 years was examined. The coefficient of determination of the two data was above 0.82, and the graphs showing the ratio of the values and the difference between the corrected values were not significantly disturbed, indicating the high accuracy of our sunspot observation data for the most recent nine years. We also verified the relationship between the relative number of sunspots and data on the scale of solar flares, which are believed to have a large impact on the earth. The results showed that there is a relationship between the two, as the fluctuations of these two data are generally consistent. This suggests that the relative number of sunspots data may be useful for predicting the effects of future solar flares.