Example of the light curve analysis of the L₅ region of HAT-P-36 b (observed with CAFOS on 2018-03-22) including the linear baseline model (see Sect. 3.2.1). Top panel: raw light curve (violet symbols) together with the 15 min binned data (black open circles, for visualization purposes) and the baseline model fitted. In this case, we assume to trojan (null hypothesis). Bottom panel: baseline-corrected light curve with the detectable limit calculated as the 95% interval for the R_t ∕R_⋆ parameter in the trojan model. In both panels, the shaded regions correspond to the 68.7% and 99.7% confidence intervals.