Flux variations (B vs. V) of HE 1136-2304 based on the photometric Swift data. The blue dashed line presents the best linear fit to the B vs. V fluxes. The black solid lines cover the upper and lower standard deviations of the interpolated AGN slope. The red dashed lines show the range of host slopes. The gray lines indicate the central B and V values of the host galaxy. The B and V flux values are listed as in Fig. 7.