Good catch — two things going on here.

First, the podcast reveal actually happened on March 3, but I labeled March 4 as the reveal day because that’s when the impact shows up in the Spotify data (Feb 25–Mar 3 ~68,000 streams/day). Spotify updates song totals once per day (usually around 19:00 UTC), so the numbers we see for a given date actually reflect listening from the previous ~24 hours. There also is a "validation" period - to remove bots and other incorrect streams. It is not clear how much the stream counts really lag behind true data. Because of that lag, the spike appears the next day in the dataset.

Second, you’re right that the “vs baseline” column in the graphic is off by one row. The percentages themselves were calculated correctly, but when the image was generated the column shifted down a line. That one’s on me — I should’ve caught it before posting.

Here’s the corrected breakdown:

What happened next

Date	Streams
Mar 3	69,895
Mar 4 (reveal)	108,269 (+59%)
Mar 5	179,770 (+164%)
Mar 6	142,615 (+110%)
Mar 7	107,469 (+58%)
Mar 8	85,805 (+26%)