Number of orbitwise PCA observations with a given soft photon index Γ₁ that do (red) or do not (blue) require a multitemperature disk component. Also highlighted are observations that do not require a disk and fall into the long hard state of MJD 53 900–55 375 (black). Dashed vertical lines indicate thresholds for hard (Γ₁ ≤ 2.0), intermediate (2.0 < Γ₁ ≤ 2.5), and soft (2.5 < Γ₁) states according to Grinberg et al. (2013).