CREATE TABLE "mean_free_path_in_kinetic_theory" (
  "vacuum_range" text,
  "pressure_in_h_pa_mbar" text,
  "molecules_cm_3" text,
  "molecules_m_3" text,
  "mean_free_path" text
);

Question: What is the pressure in ultra high vacuum?
SQL: SELECT "pressure_in_h_pa_mbar" FROM "mean_free_path_in_kinetic_theory" WHERE "vacuum_range"='Ultra high vacuum';