Heat Map of Observations 4 Years

Heat map of observations by the ExoAnalytic Solutions Ground Telescope Network over the course of over 4 years from May, 2012 to September, 2016.  The heat map of total observations by Lat/Long grid region is color-coded by total observations from red (more than 2) to green (more than 1,000) to blue (more than 100,000).  The observation tally for each grid point is displayed as a raised grid point scaled logarithmically higher with each observation.  The time step starts at 1 month and slows down gradually to sub-minutes.