Five weeks into the NFL regular season -- nearly one-third -- average Nielsen-measured viewers have risen slightly for a 2% gain to 16.8 million among four major TV network groups and Amazon Prime Video.

Five “Monday Night Football” games on Disney-owned networks (ABC, ESPN, and ESPN2) are up 8% to an average 14.7 million (13.6 million through four games a year ago).

Disney’s new contract with the NFL includes adding many regular seasons and other games on the ABC Television Network.

Biggest games of the year so far: Week two of CBS' Dallas Cowboys-Cincinnati Bengals, 27.4 million. Second biggest game: Week three of Fox's Green Bay Packers-Tampa Bay Buccaneers, 26.4 million.

Fox’s late-afternoon Sunday National game is up 4% to 20.2 million.

Looking at all its Sunday games -- including regional contests -- results in a 17.43 million average, up a scant 0.5% from a year ago.

NBC’s “Sunday Night Football” is down 4% to 19.5 million. But when including the ‘NFL Kickoff’ game that starts the season is 7% higher to 19.6 million.

CBS’s main Sunday NFL game is down 2% to 19.6 million. For all games (including regional), CBS is up 1% to 18.0 million.

This year Amazon Prime Video -- per the Nielsen measure for three games -- comes in at 11.5 million viewers for its new “Thursday Night Football” package.

A year ago, for a single "Thursday Night Football" game in week five, Fox’s simulcast with NFL Network was at 14.8 million. Also, a year ago, three exclusive NFL Network “TNF” games averaged 7.6 million.

Through five weeks of the NFL season, estimates are that the NFL on all its TV networks has earned $1.6 billion in national TV advertising revenue, according to estimates from iSpot.tv. Over the same time period a year ago, it was $1.4 billion.

This year, NFL games have produced 44.9 billion impressions so far, according to iSpot.tv estimates, up from 39.4 billion impressions a year ago.