Fig. 2
The linear fitting of Δtobs and s ⋅ K for TeV events. The black triangles are experimentally measured data, and the red lines are linear fits to experimental data. We set s = 1 for the five “time delay” events, and s = −1 for the rest four “time advance” events. The slope and intercept are (1.56 ± 0.13) × 10−15 TeV−1 and (1.8 ± 4.1) × 103 s. The Pearson’s correlation coefficient r = 0.978 implies a relatively strong linear correlation between the observed time difference and the LV factor
