monad01_walk-eduroam-44_20260911-081034

In plain words A library keeps three lists: what was delivered, what was catalogued, and who checked it out. A measurement corpus needs the same three, and a gap between them is a fact about the pipeline, not about the room. This is the ledger, per day and receiver, with every session as a row you can open.

The rate ladder

Counts and yields

Records	1,108,932
Frames the radio saw	1,159,663
Empty records	25,889
useful_yield	0.9339
capture_yield	0.9563
Empty share	0.0233
Mean rate	313.7 Hz
Bytes	798,263,232
Band / channel / width	5 GHz / 44 / 160MHz

Quote useful_yield: (records − empty records) ÷ frames the radio saw. capture_yield counts an all-zero record as delivered. A low capture_yield on 2.4 GHz is DSSS/CCK traffic that yields no channel estimate, not a quiet channel. Both are derived ratios from two independent counters and exceed 1.0 on some sessions; the counts are exact, the ratios are not.

State

Sealed	no
Decoded	undecoded (0 of 6 segments)
Projected note	no
Integrity flags	`unsealed`
Run id	`lib-walk-eduroam-2026-09-11-04`
csid	0.3.0

Record classes

No record class: the lake has not decoded this session's frames, so nothing is known about what the channel carried.