Cross sections for excitation (H^*, O^*), ionization (single, H⁺, O⁺, and double, O²⁺) and total inelastic (=excitation + ionization) collisions of photoelectrons with ground-level H and O atoms (LG90 set, see Appendix A). The H cross sections have been multiplied by ×2 to better reveal the significance of collisions with both types of atoms in an O–H mixture with ƒ_On/Hn = 1/2. We also show the adopted electron-electron pseudo-cross sections multiplied by ×10⁻³.