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A good estimation is to deduct 5 degrees Celsius from surface temperature to get temperature at 20m - 30m depth. (This is based on my experience over thousands of dives, but most of the diving is i...
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A good estimation is to deduct 5 degrees Celsius from surface temperature to get temperature at 20m - 30m depth. (This is based on my experience over thousands of dives, but most of the diving is i...