Assessment of the randomness of similarity between two intervals of the γ-ray light curve of PKS 1502+106. Top panel: Photon flux light curve with 3.35-day binning. Bottom panel: Euclidean distance between interval 1 of the curve with a 2.11 d binning, stretched by a factor of 1/0.63, and the entire γ-ray light curve in the top panel after scanning across it. The numbered intervals between the vertical dashed lines represent intervals where the γ-ray curve shows the repeated pattern. The blue horizontal line corresponds to the minimal value in the Euclidean distance curve, which is located in the middle of interval 2. The red dashed line indicates the detection moment of IC190730A neutrino event.