The CO₂ Concentration template helps you track a environment value on iPhone, iPad, and Mac. It gives you a ready-made starting point for a clear series, a useful chart style, and a long-term personal data history.

DataJot can record this series from the app, a widget, or an Apple Shortcuts automation. The line chart then makes it easier to spot trends, unusual values, and gradual changes over time.

This template uses the Parts per million unit, which keeps values comparable and avoids mixing different measurement formats in the same history.