A comparison of the top two graphs, this box and whisker graph compares the top two show both fall in similar ranges, however the max offered salary tends to fall much higher than the expected, with companies willing to offer excess of 150k for the right employee through these 3rd party hiring sites. Companies also tend to want to hire at far below the market value for an employee through these 3rd party sites if possible, and with the slough of applications they get through indeed or similar websites, the companies more than likely offer the candidate a value closer to the lower quartile rather than the upper.