We are trying to figure out Vivi's sleep patterns. Here are the data. The top graph shows the raw data. From 5am-10pm, I've marked out when she sleeps to the nearest 15 minutes. The dark areas are sleeping times. She pretty much sleeps consistently from 8pm-6am, waking up a few times just long enough to eat, so I'm not tracking the nighttime wakings.
Below the data are shifted so that "zero" is the time she woke up. The numbers across the top are no longer clock times, but hours since she woke up.
Anyone see any patterns? The only consistent pattern obvious to me is that she tends to go back down 1-2 hours after waking for (often) a long nap. And if she misses that nap she takes a long afternoon nap.