http://potterlab.bme.gatech.edu/development-data/simple-text/daily/spont/small/6-1-19.spk.txt.bz2
http://potterlab.bme.gatech.edu/development-data/simple-text/daily/spont/small/6-2-19.spk.txt.bz2
http://potterlab.bme.gatech.edu/development-data/simple-text/daily/spont/small/6-3-19.spk.txt.bz2
http://potterlab.bme.gatech.edu/development-data/simple-text/daily/spont/small/6-4-19.spk.txt.bz2