Life support & population — Ganymede Station

Air Margin

-13

breathable headroom

On Station

1.3M

30.8k departed

Displaced

65k

Displaced 1,141 kcal

01Air

Atmosphere

Oxygen produced against carbon load

Grown1.4kScrubbed711CO2 load2.2kMargin-13

Life

-13

Air Margin · breathable headroom

Grown1.4kScrubbed711CO2 load2.2kMargin-13

02Water

Water

Ice mined, split by use

Potable33.6k tAgricultural44.1k tLost35.4k t

Life

113.2k t

Mined · Reclaimed 51%

Potable33.6k tAgricultural44.1k tLost35.4k t

03Rations

Rations

Calories per person, by tier

Station essential2,076 kcalDock and freight1,932 kcalGeneral resident1,695 kcalDisplaced1,141 kcal

Life

1,141 kcal

Displaced

Station essential2,076 kcalDock and freight1,932 kcalGeneral resident1,695 kcalDisplaced1,141 kcal

04Population

Population

Residents, displaced, and departed

Resident1,191,503Displaced64,997Departed30,802

Life

1.3M

On Station · 65k displaced

Resident1,191,503Displaced64,997Departed30,802

Medical

Clinic load

Admissions799Malnutrition1,859

Life

799

Admissions · 1,859 malnutrition

Admissions799Malnutrition1,859

Two lanes. The top one carries the gas flows: oxygen the domes grew, oxygen the mechanical scrubbers picked up, and the carbon load the station puts out. The bottom lane is the margin, which is simply what is left over, and it has its own zero line because the number is small next to the flows above it. Above zero is headroom and shades cool; below zero shades warm. Watch the scrubbed line rise as the grown line falls, and watch whether the two together keep up.

The stack is mined ice divided three ways: potable for people, agricultural for the domes, and losses to sublimation and cracked lines. The dashed line running over the stack is water reclaimed and put back through, which is why it is a line and not another band. It is coming round again rather than being mined fresh.

One line per tier, against a dashed reference at the working daily standard. The tiers are ordered from the best-fed to the least, and the colours follow that order. Every line falls over the log and none of them finish above the reference. The gap between the top line and the bottom one widens as the total falls.

Stacked bars over the trailing twelve cycles. Resident means still holding a berth. Displaced means still on Ganymede without one, waiting on transport. Departed means off the moon. Hovering a bar gives the three figures and the total.

Two reads on two axes. The line is total admissions and spikes at the incident, which is trauma arriving all at once. The bars are the malnutrition caseload, which behaves nothing like the spike: it starts near zero, builds slowly, and keeps building after admissions have come back down. The axes are separate because a shared one would flatten the bars against the spike.