Best-fit normalization A of the L_X–T relation for every sky region over A_all as a function of the position in the extragalactic sky. The maps are created with cones of θ = 90° (top left), θ = 75° (top right), θ = 60° (bottom left) and θ = 45° (bottom right, only region with ≥35 clusters are shown). The first three maps have the same color scale (85%−120%), while the θ = 45° map has a wider color scale (70%−130%).