Spearman’s rank correlation coefficients and associated p-values measured between galaxy properties (columns) and our measurements (rows). Statistically significant correlations according to the Holm-Bonferroni method (described in Section 4.2.2) are highlighted as black squares, and marginally significant correlations (log p-values < –2) are shown as blue squares. Our measurements are the total timescale of 21 μm emission (t_{21 μm}), the ratio between timescales of SFR and gas(t_{21 μm}/t_CO), and the diffuse emission fractions of 21 μm (f${}_{\mathrm{diffuse}}^{21\mathrm{\mu }\mathrm{m}}$). We correlate these measurements with various parameters grouped in six categories, described in Section 4.2.1, along with the corresponding references.