The "KANATA ObsLog" is published on the Japanese blog service "Hatena". Since this service is for Japanese blogger, you see some Japanese words in this blog and keyword pages. Sorry for inconvenience.
Test for link.
Data policy: Please contact Dr. Makoto Uemura (uemuram_at_hiroshima-u.ac.jp)
if you want to use the data shown in the blog for your research.