Air consumption

These were early attempts to calculate and compare my underwater air consumption rates from Fall 2009 to Summer 2010. I compared them by general region (New England, Moorea, Friday Harbor) and by water temperature (Cold: ≤18ºC, Warm: ≥27ºC). Outliers are circled and I traced them back to the actual logged dives, where they were generally associated with strong current or 'buddy issues'.


Of course, after I did this I found that people generally standardise air consumption for depth to give a 'surface air consumption (SAC) rate.' So I recalculated and replotted and here's my final air consumption graphed by region, complete with quartiles. You can see that it's a distribution with a long upper tail.


My dive log is a ridiculously tempting source of things to graph because I log all my dive information anyway. I'm sure some of the fancypants dive computers and software can do some of this for you, but I bet they don't have fun doing it and they they can't give you r-squares and regression coefficients!! (Not that those can tell you that much for dive data anyway)