Fraction of 0.2″ spaxels inside of 0.5 R₂₅ that have 3σ detections above a given surface brightness threshold (SB) for a representative sample of emission lines. Hα is detected in upwards of 95% of all pixels in most galaxies, with a lower ∼80% fraction in some strongly barred systems (e.g., NGC 1300, NGC 1433, and NGC 1512). Typical 3σ flux sensitivity in Hα is 4−7 × 10³⁷ erg s⁻¹ kpc⁻² (3−7 × 10⁻¹⁹ erg s⁻¹ cm⁻² per 0.2″ spaxel). Hβ is typically detected in 50−80% of spaxels. Low-ionisation lines ([N II]6584, [S II]6717, and [S II]6731) are detected in 60−95% of spaxels, while the high-ionisation [O III]5007 line emission is less common (50−70% of pixels). For contrast, the faint auroral [N II]5754 emission line is detected at a 3σ level in ∼5% of spaxels (though fewer than 1% are detected at 5σ).