Mean connectivity of THE THREE HUNDRED groups and clusters at z = 0, estimated from gas and mock-galaxy filaments. The mean values of connectivity, k₂₀₀, from gas filaments are plotted in blue, and the values of k₂₀₀ from mock-galaxy filaments are plotted in red. The solid and dashed lines represent the linear fitting for the gas and the mock galaxies, respectively. The error bars are the errors on the mean values, computed with the bootstrap method.