Appendix A..........................................................A-1 Vapor Pressures of LP Gases Appendix B..........................................................B-1 Pibal Plotting Grid Appendix C..........................................................C-1 Balloon Flight Checklists Appendix D..........................................................D-1 Pibal Velocity Versus Size Appendix E.......................................................... E-1 Log Book Endorsement Formats Appendix F .......................................................... F-1 Lift Table for Helium and Hydrogen Standard  Temperatures and Pressures Glossary ..............................................................G-1 Index ......................................................................I-1 xii