Input (grade 13): The data revealed no atmosphere to a surface pressure of 10 â "20 nanobars; if it exists, it would have to be far thinner than that of Triton or Pluto.
Output (grade 6): The data revealed no atmosphere to a surface pressure of 0.03 microbars; if it exists, it would have to be far thinner than that of Triton or Pluto.