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%% BATTERY USAGE TRACE 
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This set of traces were compiled from January 2007 - present. The traces contains battery
usage data for 60 laptops. The number of days of data collected for different laptops vary since
the tool was installed on a rolling basis. Moreover, some users may have also uninstalled the tool
in the middle of using it. Apart from battery-usage data the traces also contain
data on CPU utilization, disk space, and idle time for the laptop users.

If you want to use the traces in a publication, please refer to the following
publication.

"Users and Batteries : Interactions and Adaptive Power Management in Mobile Systems", 
Nilanjan Banerjee, Ahmad Rahmati, Mark Corner, Sami Rollins, Lin Zhong. In Proceedings of 
Ubicomp 2007, Austria.