Figure 2.

Martian atmospheric densities. Densities measured by Viking 1 of CO (×) and CO2 (△), and the fits to these of Nier et al. [9]. Density is plotted on the horizontal axis against height in the Martian atmosphere on the vertical axis.

Campbell and Brunger PMC Physics B 2008 1:3   doi:10.1186/1754-0429-1-3
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