A BIG DATASET

The Great People from Dartmouth used an Android App on smartphones to track students during a semester (10 weeks, 48 students). They tracked everything from sleep to location, to phone usage, to conversations, partying and so on. They also anonimized the dataset. Can you find new relations?

The description of the dataset: http://studentlife.cs.dartmouth.edu/dataset.html
The dataset: http://studentlife.cs.dartmouth.edu/dataset/dataset.tar.bz2