\begin{overpic}[width=0.49\textwidth]{ys_ok10vma_h_02_sei}
\put(1,74){\colorbox{white}{(\sublabel{ys_ok10vma_h_02_sei}) \href{http://dream.misasa.okayama-u.ac.jp/?q=20190304115723-811900}{ys_ok10vma_h_02_sei}}}
%%(\subref{ys_ok10vma_h_02_sei}) \href{ys_ok10vma_h_02_sei}
\color{red}
\put(45.8,10.0){\footnotesize \circle{0.7} \href{http://dream.misasa.okayama-u.ac.jp/?q=20160921191810-800963}{spot of ys_ol_ok10vma@1995}} % 20160921191810-800963 % \vs(-3003.2, -5732.2)
\put(48.4,44.9){\footnotesize \circle{0.7} \href{http://dream.misasa.okayama-u.ac.jp/?q=20190304141434-938045}{spot of ys_ol_ok10vma_h@2}} % 20190304141434-938045 % \vs(-3000.6, -5676.2)
%%scale 10 micro meter
\put(1,1){\line(1,0){7.0}}
\end{overpic}