service that also reports activity at an MSA level. ... station/channel/service comprised of sessions with a minimum of
WEBCAST METRICS A quick guide to Webcast Metrics data, features and capabilities.
Webcast Metrics Introduction Webcast Metrics is the only Media Rating Council (MRC) accredited source for internet radio listening data. Data is collected via player-embedded listener tracking codes and streaming server log files. Audience reports are delivered to the publishers, and any third parties authorized by the publisher, via a web-based console. Webcast Metrics Local is a premium market-specific version of our standard Webcast Metrics product. Geography Webcast Metrics reports streaming activity in three geographies: Global, Total U.S., and DMA. Webcast Metrics Local is a premium service that also reports activity at an MSA level. (See the feature comparison chart for details.)
Available Metrics (All Publishers) Sessions Started (SS)
The number of different requests for streams (i.e. stream requests) with a duration of at least one minute in total and any duration within the reported time period
Active Sessions (AS)
Number of sessions that were active, with a duration of at least one minute in total and any duration within the reported time period
Total Listening Hours (TLH)
Total number of hours that the station/publisher has streamed during sessions with a duration of at least one minute in total and any duration within the reported time period
Average Active Sessions (AAS)
Average Active Sessions represents the total listening hours divided by the number of hours in the reported time period.
Average Quarter Hour (AQH)
The average number of listeners within the MSA, demographic and day-part, to a particular station/channel/service comprised of sessions with a minimum of 5 aggregate minutes within each clock-hour fifteen minute period
Average Time Spent Listening (ATSL)
The average time a unique listener within the specified MSA, demographic and day-part spent listening to a particular station/channel/service. Calculated as Total Listening Hours with the specified MSA, demographic and day-part divided by the number of unique listeners within the specified MSA, demographic and day-part. [TLH / CUME] = TSL
Cume
The number of unique listeners within the specified market, demographic and day-part, to a particular station/channel/service for at least five aggregate minutes.
Available Metrics (Webcast Metrics Local Publishers Only) Average Quarter Hour Rating
AQH listeners within a specified MSA, demographic and daypart, expressed as a percentage of the specified MSA demographic population. [AQH Listeners / MSA Population] * 100 = AQH Rating%
Time Spent Listening (TSL)
Calculated as Total Listening Hours with the specified MSA, demographic and day-part divided by the number of unique listeners within the specified MSA, demographic and day-part. [TLH / CUME] = TSL
Cume Rating
Unique Listeners within the specified MSA, demographic and day-part expressed as a percentage of the MSA demographic population. [CUME / MSA Population] * 100 = CUME Rating%
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Comparison Chart Feature
WCM
WCM Local Reports
Available Metrics Average Active Sessions (AAS) Session Starts (SS) Total Listening Hours (TLH) Average Time Spent Listening (ATSL) (Session Based) Average Quarter Hour (AQH) Cume/Uniques
Time Spent Listening (TSL) (Cume Based) AQH Rating Cume Rating Unique Listener Tracking
IP Address
Registration
Geography Global Domestic US All US DMA's
All US MSA's available as ordered by WCML publishers
IP Address
Registration
Demographics
Format attribution based on MRI/Simmons
Registration or format attribution
Dayparts
As requested by publisher
Standard dayparts
MRC Accreditation
All Streams reports
Pandora only
Measurement/Release Schedule
On Demand
13 four-week measurement periods per year
Top Publishers
CBS, Cumulus, Entercom, Slacker, ESPN, NPR, Univision, Radio One, Emmis, Greater Media
Pandora, Spotify, iHeartMedia, Triton Local Network
Geo-location/market assignment
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