For the first time in the 55-year history of the Super Bowl, Nielsen ratings numbers were not available the day after.

The results had not been released by the time of this posting -- 7:20 a.m. ET on Tuesday.

“Super Bowl numbers are still being processed and verified,” Nielsen said in a statement released Monday evening. “We anticipate that final viewing figures, which will include out-of-home viewing, will be available to the media tomorrow. We will update the press and the industry accordingly when a final timeline is confirmed.”

No specifics on the data issues holding up the numbers have been reported as yet.

Normally, Nielsen releases its “fast nationals” ratings by about 11 a.m. each day.

While those numbers aren't very accurate for live telecasts, “networks can (and often do) order time zone-adjusted ratings that usually follow a couple hours later,” notes The Hollywood Reporter. “Final numbers for Sunday shows, which include out-of-home viewership, are then updated early Tuesday.”

It now appears that Nielsen will skip the interim releases and release final data today.

Meanwhile, based on household tune-in data from its connected TV universe, Samba TV estimated that the national TV audience for this year's game was 32 million -- down 15% compared to last year's 37.6 million. 

Samba also estimated that ratings for the Super Bowl LV pre-game show were down 13%, halftime show ratings were down 14%, and  Presidential interview ratings were down 13%.