Oceanic OCS dive mode

Hello,

After finding that our Oceanic OCS (model 0x4450 as in the source) produced garbage values when not in dive ("normal") mode, but was still producing a log of free dives, I found that the dive mode is indeed exported.

With the enclosed patch, I'm able to properly process free dives, gauge dives, and normal dives with the proper sampling. Yay! I dove with another computer at the same time and compared the results, just to be sure.

That being said, I've also enclosed the vendor data being exported with each sample. Does anybody have an idea what the latter two bytes might mean? The former is the depth in 1/16ths foot. I figured on it being temperature or maximum depth, but can't correlate.

Best,

Kristaps