Fig. 4From: Preparing for the crewed Mars journey: microbiota dynamics in the confined Mars500 habitat during simulated Mars flight and landingCFUs retrieved from 500 l air, appearing on R2A after 72 h incubation at 32 °C. a Mean CFU values (y-axis), whereas different sampling locations within one module were grouped for each sampling event (x-axis). b The mean CFU values (y-axis) of all sampling events for each sampling location (x-axis). c The CFU values (y-axis) from a representative sample location (dining area, location 4) for each sampling event (x-axis)Back to article page