User manual update: Heat map

[Lita Ferguson]

On 21/10/2016 01:23, Rick Walsh wrote:



Do you have any comments?  I intend this legend to take the place of the
coloured squares and descriptions, starting with "Dark blue:  Tissue has
low but increasing inert gas pressure, less than or equal to 53%..."

Cheers,

Rick

Here is a rearrangement of your diagram that is possibly more logical if
one starts the explanation of the heat map by refering to the gas pressure
graph. A few points:

1) The ranges for offgassing and ongassing on the righthand side need to be
demarcated at the light green zone (0% of M-value). If the demarcation
corresponds to the black zone (100% inert gas equil pressure) then there
needs to be an explanation of for the colours between black (100% inert gas
equil pressure) and light green (ambient pressure).

2) I omitted the word Bühlmann from the lable "M-value" because this ties
the diagram very solidly to the Bühlmann algorithm and not to the VPM-B
model.

3) I added % symbols to the scale values on the right of my version of the
diagram in order to make the captions e.g '% of inert gas equilibrium
pressure" more immediately understandable.

A question from a naïve diver who knows nothing about the VPM-B
calculations. In which way is the M-value part of the VPM-B algorithm? In
other words, does it depart from a Bühlmann point of view?

Any comments, please?
Kind regards,
willem
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