What is the Pressure in hPa (mbar), when Vacuum Range is "medium vacuum"?
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
);
SELECT "pressure_in_h_pa_mbar" FROM "mean_free_path_in_kinetic_theory" WHERE "vacuum_range"='medium vacuum';