What a reading is
A reading is one saved row. CHIRPS rainfall and Sentinel-2 write those rows. Kenya is first. Coverage is partial.
Satellite rows (partial coverage): not measured. The town catalog is 7,445 places and is not a live row count.
The number above is the same public snapshot the home page shows. It is not a new count, and it is not the town catalog. Satellites stays the technical page. Measurement windows keeps each daily read.
This is not a flight clearance. A missing value stays not measured.