Some experts say making sense of bitcoin's fluctuations requires a longer period of observation. (sputniknews.com)
A graph showing the entire 4 - year period of observations of the star KIC 8462852 by the Kepler space telescope, between 2009 and 2013. (americaspace.com)
This will included periods of observation between family and child by IBESR. (threeangelshaiti.org)