Data Fields

NOTE: Not all data fields are available for all activity types. Some data fields require a paired transceiver to display data. Some data fields appear in more than one category on the dive computer.

Name

Description

Air Time Remaining

The amount of time you can remain at the current depth before a 9 m/min. (30 ft./min.) ascent to the surface would result in surfacing with reserve pressure remaining. If multiple tanks are included in gas consumption calculations, air time remaining is calculated using the combined pressure and reserve pressure of all tanks.

Approximate Depth

The current depth of the paired transceiver.

Approximate Distance

Your current distance from the paired transceiver.

Ascent Rate

The current rate of ascent toward the surface.

Average Depth

The average depth descended during a dive.

Avg Temperature

The average temperature during the dive.

Bailout TTS

The amount of time required to reach the surface if you switch to an open-circuit bailout gas.

Battery Percentage

The percentage of the battery power remaining.

Battery, Time, & Temp.

The percentage of the battery power remaining, the time of day based on your current location and time settings (format, time zone, daylight saving time), and the temperature of the air.

Buoy Navigation

The horizontal distance and direction to a paired Descent™ buoy accessory.

Compass

A visual representation of the direction in which the device is pointing.

Compass Heading

The direction you are moving based on the compass.

Conservatism

The level of conservatism for decompression calculations.

CNS

Your current central nervous system (CNS) oxygen toxicity percentage.

Current Gas PO2

The partial pressure of oxygen (PO2) of the current gas.

Diluent PO2

The partial pressure of oxygen (PO2) of the diluent gas during a closed-circuit rebreather (CCR) dive, even if you are bailed out to an open-circuit gas.

FiO2

The percentage composition of oxygen in the current gas.

Gas Consumption Rate

The gas consumption rate for your transceiver, calculated using the pressure change over the last two minutes.

Gas Density

The density of the selected gas at the current depth and temperature. It displays in yellow when over 5.2 g/L, and in red when over 6.2 g/L, indicating it is difficult to fully exhale accumulated CO2 due to the density of the gas blends.

GF99

The current gradient factor. If you follow the dive computer's guidance, the selected low gradient factor should display when you approach your first decompression stop, and the selected high gradient factor value should display when you approach the surface. On-Gassing displays when you take on additional tissue load.

Maximum Depth

The maximum depth descended during a dive.

Max Temperature

The maximum temperature during the activity.

Min Temperature

The minimum temperature during the activity.

N2/He%

The nitrogen/helium tissue loading percentage.

NDL ↑3M / NDL ↑10FT

Your No Decompression Limit (NDL) time if you ascend 3 m (10 ft.) from your current depth.

NDL ↓3M / NDL ↓10FT

Your NDL time if you descend 3 m (10 ft.) from your current depth.

NDL Δ 3M / NDL Δ 10FT

Your NDL time if you ascend or descend 3 m (10 ft.) from your current depth.

None

This is a blank data field.

OTU

Your current oxygen toxicity units (OTU).

Pinned Tanks

The paired transceivers that appear on the transceiver data screen.

Raw Ceiling

The unrounded depth the diver should not ascend past.

Stopwatch

The stopwatch time for the current dive.

Sunrise

The time of sunrise based on your GPS position.

Sunset

The time of sunset based on your GPS position.

Surface Gradient Factor

The expected gradient factor if the diver were to instantaneously surface.

Tank Combo

The current tank pressure and depth of the paired transceiver, and your distance from it.

Tank Pressure

The current tank pressure of the paired transceiver.

Temperature

The temperature of the water. Your body temperature affects the temperature sensor.

Time of Day

The time of day based on your current location and time settings (format, time zone, daylight saving time).

Time of Day (Seconds)

The time of day including seconds.

Time to Surface

The amount of time required to safely ascend to the surface, including decompression stops.

Tissue Graph (GF)

A bar chart displaying simulated values for nitrogen and helium in the body, with the y-axis of the field adjusted to your conservatism.

Tissue Graph (Raw)

A bar chart displaying simulated values for nitrogen and helium in the body.

TTS @ +5 min.

The amount of time required to safely ascend to the surface if you remain at your current depth for five minutes.

TTS Δ +5 min.

The difference between the amount of time required to safely ascend to the surface, and the amount of time required to safely ascend to the surface if you remain at your current depth for five minutes.

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November 2025