Case ids carry no time order¶
Dates are shifted and case ids are shuffled: neighbouring ids are no more alike in device drift or port than random pairs.
| Status | established: shown on many cases, with a control. |
What it means¶
Unit ageing, moves or replacements cannot be followed through the release.
Evidence¶
| Study | Date | Status | Summary |
|---|---|---|---|
| Physical units, shared drift and time order | 2026-10-11 | current | Device drift rates cluster into units: about 8 SNUADC boards and 8–18 BIS monitors. Part of the drift is shared by both devices of a case and changes between cases: the recorder PC's own rate. Case order carries no time information. |