From top to bottom: search windows of 3, 1, 1/3 and 1/9 Crab pulsar rotation periods length. Left: enhancements of VHE γ-rays before, centered on and after a radio GP. The gray bar indicates the search window for which the κ dependence is studied in the respective right hand plot. Right: horizontal cyan line indicates the number of VHE γ-rays in the search window centered on GPs (the corresponding value from the observed data is indicated by a cross in the left hand plot. The normalization of the y-axis between the two columns is different). The plot also contains the results from 50 different sets of γ-ray MC simulations, using different values of κ. The average of each set is indicated by a red tick. The 1σ range is indicated by the green lines, the 1.96σ range (corresponding to a rejection of the null hypothesis on a p = 0.05 confidence level) is indicated by the blue lines.