Kyunghwa Jeong removed figures/fig_4 from layout  almost 9 years ago

Commit id: a21334344e505e0fb1199169aa4e10327887f55d

deletions | additions      

       

figures/Fig_3/Fig_3.png  Results_sleep.tex  Results_clock.tex  figures/fig_4/fig_4.png  Results_knockdown.tex  figures/fig_5/fig_5.png  figures/fig_6/fig_6.png