1. "Distribution of the four-lepton reconstructed mass for the sum of the 4e, 4μ, and 2e2μ channels. Points represent the data, shaded histograms represent the background and un-shaded histogram the signal expectations. The distributions are presented as stacked histograms. The measurements are presented for the sum of the data collected at centre-of-mass energies of 7 TeV and 8 TeV." - CMS experiment