Figure 15
The heat map of two-dimensional lattices from crystal structures in the CSD on the northern hemisphere. The radial distance is the latitude φ ∈ [0°, 90°]. Top: all N = 1 854 209 lattices with sign(Λ) ≤ 0, φ ≤ 0. Bottom: all N = 406 930 oblique lattices with sign(Λ) < 0, φ < 0. |