Fig 3. Constellations features aggregated per sky culture.

The culture size (constellation count) is on the left. Four constellation features (s₁, s₁₂, s₁₆, and s₁₇) are then shown via their averages and standard deviations per culture. The global average of each statistic is marked with a dotted line. The horizontal scales for the first two statistics are logarithmic, and the rest linear.