{"id":3759,"slug":"four-african-charts-monday-control-aug-sep-2026","title":"Same-weekday control: African share of Spotify’s four African daily charts on the four Mondays in the window","source":"Computed from this desk's spotify-four-african-charts-african-share-series-2026 dataset","source_url":"https:\/\/kworb.net\/spotify\/","source_type":"computed","method":"Chart volumes swing with the day of the week, so a series collected on uneven intervals can show a move that is really a weekday effect. This is the control: the same calculation restricted to the four Mondays the desk collected in the window, 17 and 24 and 31 August and 7 September 2026, which are evenly spaced at seven days. Four points is a very short control and it cannot separate a weekday effect from a trend that happens to run in the same direction; it only shows whether the direction survives holding weekday fixed. This desk's Spotify chart collector retains the most recent full 76-market snapshots of the daily Top 200 as published by kworb.net. This dataset was built on 2026-09-07 from every snapshot on disk: 2026-08-13, 2026-08-17, 2026-08-20, 2026-08-21, 2026-08-22, 2026-08-24, 2026-08-25, 2026-08-27, 2026-08-28, 2026-08-30, 2026-08-31, 2026-09-01, 2026-09-02, 2026-09-04, 2026-09-06 and 2026-09-07. Gaps between listed dates are collection gaps, not zeros, and the intervals are uneven. For each date and each of the four markets Spotify publishes a daily chart for in Africa (Nigeria, Egypt, Morocco, South Africa), every entry on that market's Top 200 was summed, and the portion credited to lead artists whose registered country of origin is on the African continent was divided by the market total. Origin is applied as currently registered in this desk's roster, to every date, so a later correction moves the whole series rather than only future points. Two artists flagged as classified by name search and relevant to these four charts, Samthing Soweto (South Africa) and Cheb Amrou (Morocco), were checked against their charting recordings and confirmed by published biography before this build. Chart streams are a sample of consumption inside a market's daily Top 200, not a full accounting of streaming in that market, and a share of the Top 200 is not a share of a country's listening. On 2026-08-28 the upstream source served a chart identical in every position, track and stream count to 2026-08-27 for 44 of 76 markets, Egypt among them; Nigeria, Morocco and South Africa differed. That date is retained and disclosed rather than dropped, and it registers as a flat step for Egypt, not a fall.","unit":"pct","license":"Afrobeats Wire's compilation and analysis are licensed CC BY 4.0. Rights in the underlying source data remain with the source named above.","confidence":"medium","retrieved":"2026-09-07 00:00:00","n":4,"first_party":0,"columns":[{"key":"date","label":"Date (Monday)","type":"text"},{"key":"ng_share_pct","label":"Nigeria African share, %","type":"number"},{"key":"eg_share_pct","label":"Egypt African share, %","type":"number"},{"key":"ma_share_pct","label":"Morocco African share, %","type":"number"},{"key":"za_share_pct","label":"South Africa African share, %","type":"number"}],"rows":[{"date":"2026-08-17","ng_share_pct":81.02,"eg_share_pct":49.16,"ma_share_pct":40.34,"za_share_pct":11.22},{"date":"2026-08-24","ng_share_pct":80.57,"eg_share_pct":46.05,"ma_share_pct":39.6,"za_share_pct":13.62},{"date":"2026-08-31","ng_share_pct":76.93,"eg_share_pct":44.38,"ma_share_pct":37.58,"za_share_pct":13.7},{"date":"2026-09-07","ng_share_pct":76.72,"eg_share_pct":43.05,"ma_share_pct":37.71,"za_share_pct":15.73}]}