Distributions of soft excess strength and soft flux fraction. Top: distribution of soft excess strengths (F_SE/F_PL) shown for sources best fit by each model. Sources best fit with only with a single absorbed power law are shown with a black dotted line, sources best fit with a soft excess (PL+PL) are shown as a red solid line, sources best fit with a warm absorber are shown as a blue dash-dot line, and sources best fit with partial covering absorption are shown with an orange dotted line. Bottom: same as top, but shown for the soft flux fraction, F_{0.2 − 1}/F_{0.2 − 10}. The vertical black line shows the expected SFF for a source with Γ = 2 and nH = 5 × 10²² cm⁻².