tokens: analysis is beyond the scope of this work and will be discussed in Paper III. The results presented herein provide a statistically significant list of values and histogram distributions for reference and baselines in future work. Given the large statistics in this investigation, the beam/strahl fits for selection criteria Criteria UP are now the most comprehensive attempt to parameterize the beam/strahl electron velocity moments in the ambient solar wind. These results are useful for multiple modeling and simulation studies in addition to comparison with inaccessible regions like the intracluster medium. Further, these results will provide a statistical baseline for the Parker Solar Probe mission and the future Solar Orbiter and IMAP missions. Appendix A Definitions and Notation As in Paper I , in this appendix the symbols and notation used throughout will be defined. For all direction-dependent parameters we use the subscript j to represent the direction, where j = tot for the entire distribution, j = ∥ for the the parallel direction, and j = ⊥ for the perpendicular direction, where parallel/perpendicular is with respect to the quasi-static magnetic field vector, (nT). The generic subscript s is used to denote the particle species (e.g., electrons, protons, etc.) or the component of a single particle species (e.g., electron core). For the electron components, the subscript will be s = ec for the core, s = eh for the halo, s = eb for the beam/strahl, s = eff for the effective, and s = e for the total/entire population. Below are the symbol/parameter definitions: – one-variable statistics – X min ≡ minimum – X max ≡ maximum – – – X 25% ≡ lower quartile – X 75% ≡ upper quartile – σ ≡ standard deviation – σ 2 ≡ variance – fundamental parameters – ε o ≡ permittivity of free space – μ o ≡ permeability of free space – c ≡ speed of light in vacuum (km s −1 ) = – k B ≡ the Boltzmann constant (J K −1 ) – e ≡ the fundamental charge (C) – plasma parameters – n s ≡ the number density (cm −3 ) of species s – m s ≡ the mass (kg) of species s – Z s ≡ the charge state of species s – q s ≡ the charge (C) of species s = Z s e – T s , j ≡ the scalar temperature (eV) of the j th component of species s – the temperature ratio (N/A) of species s and s ′ of the j th component – the temperature anisotropy (N/A) of species s – V Ts , j ≡ the most probable thermal speed (km s −1 ) of a one-dimensional velocity distribution (see Equation 1 (c)) – ≡ the drift velocity (km s −1 ) of species s in the plasma bulk flow rest frame – C s ≡ the sound or ion-acoustic sound speed (km s −1 ) (see supplemental PDF file in Wilson et al. 2019b , for definitions) – V A ≡ the Alfvén speed (km s −1 ) (see supplemental PDF file in Wilson et al. 2019b , for definitions) – V f ≡ the fast mode speed (km s −1 ) (see supplemental PDF file in Wilson et al. 2019b , for definitions) – Ω cs ≡ the angular cyclotron frequency (rad s −1 ) (see Equation 1 (d)) – ω ps ≡ the angular plasma frequency
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