Understanding my Sleepyhead Statistics

I just read much of RobySue's Blog and the definitions in the help section of Sleepyhead.

Here is a snap shot of my statistics from Sleepyhead:


SleepyHead v0.9.2

This is a beta software and some functionality may not work as intended yet.
Please report any bugs you find to SleepyHead's SourceForge page.
CPAP Statistics as of Thursday, February 16, 2012
437 days of CPAP Data, between 12/5/2010 and 2/16/2012
Details Most Recent Last 7 Days Last 30 Days Last 6 months Last Year
AHI 0.65 1.02 0.79 0.97 0.97
Hours per Night 07:39 07:51 08:01 15:36 13:57
Average Pressure 7.75 5.95 6.51 2.47 1.16
95% Pressure 10.20 9.68 10.32 10.50 10.40
Average Leaks 17.97 11.38 8.45 2.28 1.07
95% Leaks 32.40 32.40 32.40 32.40 32.40

Changes to Prescription Settings
First Last Days AHI Machine Mode Pr. Rel. Min Pres. Max Pres.
11/24/2011 2/16/2012 84 0.91 ResMed Auto EPR x3 5.00 20.00
11/11/2011 11/23/2011 13 2.09 ResMed Auto EPR x3 6.00 20.00
12/5/2010 11/10/2011 340 0.94 ResMed Auto EPR x3 4.00 20.00
The above has a threshold which excludes day counts less than 5 from the best/worst highlighting

Machine Information
Brand Model Serial First Use Last Use
ResMed S9 AutoSet 22101691401 12/5/2010 2/16/2012