Figure 3

Concentrations of dissolved gases in Ward Hunt Lake on 7 June and 16 July 2017. (a) carbon dioxide (CO₂), (b) methane (CH₄), (c) nitrous oxide (N₂O) and (d) oxygen (O₂) expressed as % equilibrium with air, in Ward Hunt Lake in June (black) and July (red) 2017. Note the differences in logarithmic scales.