Evolution of the ratio between NIR and X-rays during flare I/1 on 2014 Mar. 10. Top panel: the dashed line surrounded by the dark gray error bars corresponds to the smoothed light curve of the X-ray flare and its flux can be seen on the left y-axis. The solid line and the light gray error bars is the NIR light curve whose flux is read on the right y-axis. Bottom panel: the flux of the X-ray light curve divided by the NIR one.