http://potterlab.bme.gatech.edu/development-data/simple-text/daily/spont/small/7-1-18.spk.txt.bz2
http://potterlab.bme.gatech.edu/development-data/simple-text/daily/spont/small/7-2-18.spk.txt.bz2
http://potterlab.bme.gatech.edu/development-data/simple-text/daily/spont/small/7-3-18.spk.txt.bz2
http://potterlab.bme.gatech.edu/development-data/simple-text/daily/spont/small/7-4-18.spk.txt.bz2