Instrument · what the count rests on

What the headcount is made of.

The app on the previous page prints one number per minute. This page opens the back of the instrument and shows what that number rests on: every measured day on one clock, the four ways of computing a level and how often they agree, the minutes with a known headcount the count map passes through, what an empty floor reads night by night, how often each rule would have cried wolf on a night nobody was there, which receivers raise alarms alone, whether the phones in the room move with the radio reading, and whether a warm node reads differently from a cool one.

Also: each receiver and radio configuration, day against night.

Companion labs in Occupancy

In plain words Pick a day on the calendar and see people per minute: the Wi-Fi room level, calibrated that day against the Bluetooth devices the fleet heard, and fused with them. The people scale is a stated assumption you can move. A gap is a gap; nobody fills it with a zero.

The capture format Bluetooth in the room

Method for the level panels: Envelope, our transmitter only · Doppler 20–60 Hz, our transmitter only · Delivered-rate collapse · Envelope, every transmitter

Temperature against the empty floor

Per receiver-hour, the node temperature from the fleet export beside the hour's median raw statistic (dB), its level and its time-in-session. The fit is a slope in dB per degree over certified-empty hours with a bootstrap over nights, and a second slope against time-in-session. Hours within a night are serially dependent, so there is no p-value and the interval is over nights.

Per receiver over certified-empty hours: the slope of the raw `env_inj` statistic in dB per degree with a 5–95 % bootstrap over nights, and the slope against hours since the segment started. A floor that moves with temperature and not with time-in-session is thermal; the reverse is the radio settling. Fewer than 2 nights prints no interval.
Receiver	Hours	Nights	Temp range (°C)	dB per °C	5–95 %	dB per hour in session	5–95 %
monad02	105	23	29.5	+0.0087	+0.0012 to +0.0286	-0.0120	-0.3743 to +0.4458
monad03	120	27	24.9	+0.0068	-0.0339 to +0.0188	+0.4034	+0.0962 to +0.6899
monad04	129	28	27.4	-0.0012	-0.0048 to +0.0258	-0.1990	-0.5739 to +0.3438
monad05	133	29	5.6	-0.0052	-0.0365 to +0.0261	+0.1607	-0.3795 to +0.7458
monad06	116	26	6.7	+0.0250	+0.0047 to +0.0530	+0.2244	-0.1586 to +0.6049
monad07	122	28	6.2	+0.1071	-0.0105 to +0.2571	+0.4506	-0.3048 to +1.4734
monad08	121	27	6.2	-0.0057	-0.0367 to +0.0253	+0.2646	-0.0258 to +0.6076
monad09	99	21	7.1	+0.0073	-0.0497 to +0.0399	+0.8158	-0.0934 to +2.0752
monad10	116	26	5.7	+0.0212	-0.0140 to +0.0507	+0.1864	-0.2666 to +0.5565

JSON: days · agreement · nights · false alarms · receivers · bystanders · temperature · episodes