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Fig. 2


Differential (top sub-panels) and control (bottom small sub-panels) light curves (LC) in magnitudes as a function of the Heliocentric Julian Date (HJD) for the two blazars observed in this work. Left: 1ES 1959+650, B and R bands. Right: HB89 2201+044, B and R bands. Horizontal black-dashed lines show two times the B standard deviation of the control light curves. Red data points correspond to R-band data, while blue data points to the B.

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