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Single-Gas Data Screens

The primary data screen for the single-gas dive mode displays the main dive data, including your breathing gas, rate of ascent or descent, and current depth. You can press NEXT to view the dive compass (Navigating with the Dive Compass) and additional data, such as your maximum depth, time to surface (TTS), the time of day, and the current temperature.
Single gas dive data screen with callouts

1

Your nitrogen (N2) and helium (He) tissue load level.

Green Green: 0 to 79% tissue load.

Yellow Yellow: 80 to 99% tissue load.

Red Red: 100% or greater tissue load.

2

Your rate of ascent.

Green Green: Good. Ascent is less than 7.9 m (26 ft.) per minute.

Yellow Yellow: Moderately high. Ascent is between 7.9 and 10.1 m (26 and 33 ft.) per minute.

Red Red: Too high. Ascent is greater than 10.1 m (33 ft.) per minute.

3

Your partial pressure of oxygen (PO2) level.

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September 2025
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