RR Lyrae classification probability score distribution of the crossmatched sample. The classification probability score of each star was given in the Sesar et al. (2017) catalogue. The color green refers to the stars with matching frequencies from K2 and Pan-STARRS, blue denotes stars that have an alias in their frequency from Pan-STARRS, and red is for the stars that have a difference in their frequencies. The dot-edged black columns show the number of misclassified stars within each bin.