Bivariate Ripley’s L comparing the star formation rate 1 Gyr ago as calculated by Harris & Zaritsky (2009) and bubbles detected in Hα (top left), S II (top right), and O III (bottom) at window sizes of 12–70 px. Solid black line: L estimated from original pattern. Dashed red line: pointwise mean of half of the simulated patterns. Gray envelopes: MAD. 10 px corresponds to about 1.67′ or 24 pc at an LMC distance of 50 kpc.