Observed temperatures over the observed inflow direction for observed solar wind speeds between 345 and 355 km/s for 7 July 2020–30 November 2023 for PAS and for 20 April 2021–27 July 2023 for SPAN-I. Panel b): 2D histogram of PAS azimuthal temperatures ${\text{T}}_{y,obs}^{\mathit{PAS}}$ over the measured azimuthal direction ${\phi }_{sw,obs}^{\mathit{PAS}}$. The second ordinate on the right gives the corresponding thermal angle ${\alpha }_{y,obs}^{\mathit{PAS}}$. The vertical solid and dashed black lines indicate the bin centres and edges of the azimuthal PAS instrumental bins, respectively. The black triangles correspond to the width Δ_GSϕ_j of the respective bin with respect to the right hand ordinate. The colour scale is normalised to the maximum of each ${\phi }_{sw,obs}^{\mathit{PAS}}$ bin. Panel a) gives the Frequency of Occurrence (FoO) of the observed temperatures as a 1D histogram. Panel c) shows the FoO of the observed azimuthal angles. Panels d), e) and f) show SPAN-I observations in the same format, except that here, the out-of-ecliptic temperature ${\text{T}}_{z,obs}^{SPAN-I}$ and the corresponding thermal angle ${\alpha }_{z,obs}^{SPAN-I}$ are shown over the elevation angle ${\vartheta }_{sw,obs}^{SPAN-I}$ and the black triangles mark the bin width Δ_GSθ_k of SPAN-I in the z direction.