The more favorable 2017 totals compared to 2016 in weeks four and five are probably due to Trump’s remarks that drew a lot a curiosity and interest to what would happen after the players began to react to the president. Then the 2017 total falls below 2016 again in week six.
Great information.
And, of coure, the comparison that matters most is 2017 to 2015 which reflects all the decline in audience after Kaepernick and others started their protest stunts in 2016.