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This week in measurement

Nielsen changed how it counts Spanish-speaking homes on Saturday. As of September 26, Nielsen's Spanish Language Universe Estimate, the figure that sets how many U.S. households are classified by the language spoken at home, is built by combining the Census Bureau's American Community Survey with Nielsen's own Hispanic survey. Nielsen says the change adds more respondent data across more markets and that the result is a modeled estimate. It applies to both national and local currency. Universe estimates are the denominators every rating is divided into, so a change here moves Spanish-language ratings without a single viewer changing what they watch. Networks selling Spanish-language inventory in the fourth quarter are now selling against a new denominator.

Frank Kowalczyk: Read Nielsen's own release. In one paragraph the survey is the "National Hispanic Television Survey." Two sentences later it's the "NHES." Same paragraph. Same survey, presumably. I've signed off on documents like that. You catch it on the third read, at 11 p.m., and you let it go because the printer's warm. That's the only story I have about 2009 that I'm allowed to tell.

Nielsen moved streaming ratings to a daily delivery. Nielsen announced on September 16 that its Streaming Content Ratings product now ships every business day, covering viewing from two days earlier. It had been weekly. Nielsen says delivery time is down by up to 80 percent, and its public weekly Streaming Top 10 now arrives in half the time. The measurement method itself did not change; Nielsen rebuilt the systems that collect and validate the data. One detail matters for everyone who isn't a client: according to TheWrap's reporting, the daily numbers stay with paying clients, and the public still gets the weekly chart.

Daily. For clients. The rest of you get the weekly, and now it's only eleven days stale instead of a month. Progress. I timed it against the boat. The boat is still further behind.

The last Gauge on the old baseline showed YouTube at a record 14.2 percent. Nielsen's July edition of The Gauge put YouTube at 14.2 percent of all TV viewing, its highest share yet. It is also the final edition calculated before Nielsen recalibrates its universe estimates with updated ARF DASH data, which Nielsen has said will set a new baseline for streaming, cable and broadcast shares. Anyone comparing August to July will be comparing two different rulers. Unmeasured is holding the recalibration story until the August edition publishes and the size of the shift is visible.

Write the number down. Frame it if you want. It's the last one that means what the last forty meant.

The teaser: what the JIC said out loud in 2025

In July 2025, the U.S. Joint Industry Committee finished a mid-term audit of the three companies it certifies as alternatives to Nielsen. It released the results publicly, on the same day, with names attached. The JIC's "Guidelines for Transactability" report said all three providers needed more work on younger demographics. It encouraged VideoAmp to strengthen its transparency and formatting consistency. MediaPost reported that Comscore had not provided data on digital networks. The JIC called iSpot a leader in measurement stability and completeness.

That is what a public audit looks like. Buyers who were not in the room could read it and adjust.

On September 22, 2026, the JIC re-certified all three for 2026 through 2028. It ran 39 data evaluation questions and 672 tests across more than 150 million telecast observations on more than 680 networks. It published a report called "How a Number Is Made." The public version explains, in real detail, how each provider observes viewing and turns it into people.

What the public version does not contain is a single result.

From named weaknesses to a pass

The U.S. Joint Industry Committee is a committee of media buyers and national TV publishers, formed in January 2023. Its members include Paramount Skydance, Fox, NBCUniversal, Warner Bros. Discovery, TelevisaUnivision, AMC Networks, E.W. Scripps and Hallmark Media, along with agencies. Its certification answers one narrow question: is this provider's data usable to plan, post and settle a national TV deal? The JIC calls that transaction readiness.

It is not Media Rating Council accreditation, which the JIC itself describes as real methodology audit. Something to think about.

Inside that narrow question, the July 2025 mid-term audit did something useful. It told the market where each company was weak. The JIC's public "Guidelines for Transact-ability" report said all three providers needed more work on younger demographics. It encouraged VideoAmp to strengthen its transparency and formatting consistency.

Our friends at MediaPost reported that Comscore had not provided data on digital networks.

And the JIC singled out ONLY iSpot as a leader in measurement stability and completeness. Anyone could read it. Buyers who weren't in the room could adjust their buys.

The September 22, 2026 certification says something much thinner. All three providers "met the JIC's baseline threshold for transactability" across total households, advanced audiences and personified demographics. The results were reviewed by the JIC's Measurement Subcommittee and "approved by a majority vote of the Full Committee." The vote count is not public. Neither is any provider's score, any failed or conditional test, or whether a single 2025 weakness was fixed.

The JIC's own website states the split plainly. The industry gets a "synthesized version" of How a Number Is Made, behind a sign-up form. "JIC members receive access to the comprehensive report and detailed measurement-provider responses developed through the certification process." The press release calls the member document "the full analysis." The website describes provider responses. Those may or may not be the same thing, and Unmeasured asked the JIC which it is.

The public report is candid about what it is for: "The JIC's goal isn't to determine which methodology is best." It is meant to show "how a number becomes a number and why reported audiences may differ across providers." That's a worthwhile goal. It is not the same as telling a buyer how far apart the providers land on the same telecast, which is the number a buyer needs before choosing one to settle a guarantee.

One more pair of numbers. The 2025 mid-term audit was reported as covering more than 699 tests. The 2026 evaluation, which the JIC calls its "most comprehensive currency evaluation to date," reports 672. The JIC says 2026 expanded testing of stability, sports and long-tail programming, so the two counts may not measure the same thing. The JIC hasn't explained the difference.

"Baseline threshold." Baseline means floor. Threshold means floor. You put two floors in a row when one floor sounds like what it is. Here's my habit, the Kowalczyk Ratio: words spent describing a test, divided by words spent reporting its result. July 2025, I'd put it around four to one. September 2026, the denominator is zero. You can't divide by zero. That's not me being clever. That's arithmetic, and arithmetic doesn't take meetings.

Who answered

The JIC got five questions through its listed media contact, [email protected], addressed to Brittany Slattery. The release identifies her as OpenAP's chief marketing officer and the JIC's vice president. OpenAP runs the JIC's technology and administration, and the committee's press line is an OpenAP address. The questions were: will the JIC publish the scoring rubric, each provider's category scores, and any failed or qualified tests; what unit the "150 million telecast observations" counts; whether the member document includes test results; whether non-member buyers can see it; and why the 2025 practice of naming weaknesses in public wasn't repeated. The JIC did not respond by deadline.

Comscore was asked what share of its person-level impressions is directly observed versus modeled, and what validation and uncertainty measures it can release. Monday afternoon, its outside firm, Broadsheet Communications, asked for more time because its Comscore contact was traveling.

Unmeasured held the deadline. Tuesday morning, Broadsheet sent Comscore's full answer: "Comscore is committed to the JIC process and pleased to be recertified as a national currency." Neither question was addressed. We understand.

iSpot was sent the same two questions through Jason Damata of Fabric Media, which represents iSpot. iSpot did not respond by deadline.

VideoAmp was sent the same two questions on Tuesday morning, plus a third about its MRC status. VideoAmp seems to no longer have a comms team, after laying most off this past month. It’s possible they won’t be in business in 6 months.

Nielsen was asked also why it has declined to take part in JIC certification and whether it would take the same 672 tests. Nielsen did not respond by deadline.

Later answers will run as a dated update at the bottom of this issue.


Fifteen words. I did two tours at Comscore, so let me tell you what fifteen words cost there. A Monday. A lawyer. A second lawyer to check the first lawyer's adjectives. You asked how much of the number is real and they told you how they feel about it. "Pleased." I was pleased once. It was 1994 and the Bears were 9 and 7.

How we reported this: this issue draws on the JIC's September 22, 2026 release, the public edition of How a Number Is Made, the JIC's July 2025 mid-term audit materials and trade coverage of both, and Nielsen's own announcements; Unmeasured did not see the members-only report, and the 2025 findings are described as 2025 findings with no claim about whether they persist. Right-of-reply questions went to the JIC, Comscore, iSpot and Nielsen on September 28 with a 9 a.m. ET September 29 deadline, and to VideoAmp on the morning of September 29; only Comscore responded, and later answers will run as a dated update. Disclosures: Jason Damata of Fabric Media, which represents iSpot and received iSpot's questions, is quoted in this issue and is an on-record ADOTAT source. ADOTAT has no financial relationship with the JIC, OpenAP, Comscore, iSpot, VideoAmp or Nielsen, and no subject reviewed this issue before publication. Frank Kowalczyk is a fictional character; his career, his binders and his boat are invented.

What's behind the paywall

The sentence the JIC softened. The committee's public report describes VideoAmp's MRC status in one gentle line. The MRC's own record says something else. ADOTAT+ members get both, side by side, and the one question that decides whether the certificate means what buyers think it means.

The document the seller has and you don't. The networks selling you a guarantee can read the full test results. Can you? We name who's in the room.

Nielsen's empty chair. Four methodology changes this fall. Zero went through the JIC. Here's who benefits when the results stay private.

Four things to demand before your next deal closes. No membership required. One of them comes from a man who represents a measurement company, and he says some of his industry is "posing as measurement."

Frank, unfiltered. He's worked at Nielsen, Comscore, iSpot and VideoAmp. He's written the member-only binders. He knows what goes in them, and it isn't the arrows.

Everyone else will read the press release. ADOTAT+ members will read the results nobody published.

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