http://potterlab.bme.gatech.edu/development-data/simple-text/daily/spont/sparse/5-1-8.spk.txt.bz2
http://potterlab.bme.gatech.edu/development-data/simple-text/daily/spont/sparse/5-2-8.spk.txt.bz2
http://potterlab.bme.gatech.edu/development-data/simple-text/daily/spont/sparse/5-3-8.spk.txt.bz2
http://potterlab.bme.gatech.edu/development-data/simple-text/daily/spont/sparse/7-1-8.spk.txt.bz2
http://potterlab.bme.gatech.edu/development-data/simple-text/daily/spont/sparse/7-2-8.spk.txt.bz2
http://potterlab.bme.gatech.edu/development-data/simple-text/daily/spont/sparse/7-3-8.spk.txt.bz2
http://potterlab.bme.gatech.edu/development-data/simple-text/daily/spont/sparse/7-4-8.spk.txt.bz2