pDiveLog - Analyses Window

This page shows the gas loading and decompression information for the dive. The program uses either the ZHL16B or ZHL16C decompression models for these calculations. This causes some minor discrepancies with the decompression data shown in the dive profile plot since this information is your dive computer which may use a different modem (that hasn't been made available by the manufacturer).

ABR	"Average Breathing Rate". This is the average surface breathing rate (in litres per minute) by which you consumed your gas during the dive. This inofrmation is useful when planning future dives as it allows you to calculate how much gas will be required.
NDL	"No Decompression Limit". This is the time remaining at the current depth before the dive becomes a decompression dive. If the no decompression limit is exceeded, then this will display the decompression ceiling (i.e. the maximum depth to which the diver can ascend). Note: These values are based on the internal decompression model calculation and not information from the dive computer.
CNS	"Central Nervous System". This tracks the CNS oxygen toxicity on a dive. This primarily concerns the effect to the brain of short term exposure to oxygen at high partial pressures.
OTU	"Oxygen Toxicity Units". This tracks the OTUs on a dive. This primarily concerns the effect to the lungs of prolonged exposure to oxygen at high partial pressures. This is the same as UPTD (Unit Pulmonary Toxicity Dose).
Tissues	The tissues graph shows the current nitrogen loading in each tissue. If the value from any tissue exceeds 1 bar, then the dive becomes a decompression dive. The tissues are displayed in red or green. If a tissue is ongassing, it is displayed in red, and if it is offgassing, it is displayed in green.