Sleep statistics for 18 - 19 January (Tue).
Went to bed / woke up: 1:34 am / 6:38 am
Total time: 5h 03m
Analysis made by Sleep Cycle.
My sleep graph for the entire night:

I don't know if this app is reliable or not, but interesting.

From iPhone app. Sleep Cycle
2010/01/19 9:58 (16年2ヶ月前) by KNEXON