[PATCH] For CCR dives, prevent overprinting of cylinder pressure data on dive profile

[Willem Ferguson]

Print CCR cylinder pressure labels in a nonoverlapping way.

The oxygen and diluent cylinder pressures with CCR dives are often 
fairly similar, within the
range 100-180 bar. This causes the cylinder pressure text for the two 
cylinders to be
overprinted, either with the labels at the start of the dive or with the 
pressure labels at
the end of the dive. This patch minimises the overprinting by writing 
cylinder info for the top
graph above the graph, and the cylinder information for the bottom graph 
below the graph. The
text for the bottom graph will therefore not overlap with the top graph 
and vice versa. See
attached image of before-this-patch (above) and after-this_patch (below) 
dive profile.

Signed-off-by: willem ferguson <willemferguson at zoology.up.ac.za>

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