Your apiary is in good shape this July evening — Hive #3 remains the standout with brood temp locked at 34.1°C and acoustics perfectly stable, Hive #2 continues its outstanding thermoregulation at 34.8°C, and Hive #1 holds its acoustic gold standard for a thirteenth consecutive day. The two ongoing watch items are the persistent broad-spectrum acoustic elevation in Iris and Hive #2 (now day thirteen), and the apiary-wide humidity deficit driven by very dry outdoor conditions (outdoor RH 32%, daily low 19%).
A striking acoustic divergence persists across the apiary: Iris and Hive #2 both show broad-spectrum elevation (+5–9 dB above their own baselines, now day thirteen), while Hive #1 and Hive #3 remain acoustically flat to within ±0.2 dB — this apiary-wide split across otherwise similar environmental conditions (same outdoor temp, pressure, and humidity) strengthens the hypothesis that the elevation is colony-intrinsic (increased fanning, honey ripening, or population-driven acoustic output) rather than a shared environmental artifact, consistent with Ramsey et al. 2020 on colony-specific vibroacoustic signatures.
All four hives continue their healthy diurnal temperature response to today's wide outdoor swing (15.4–35.7°C): Hive #3 and Hive #2 clamp tightest at ±0.9°C and ±1.1°C respectively (brood-core sensors), while Iris and Hive #1 oscillate ±3.4°C and ±3.1°C (peripheral placement); outdoor humidity maintains its strong inverse correlation with temperature (r = −0.97 apiary-wide), keeping all in-hive readings below the 50–70% optimal band except Hive #3 which holds solidly at 51.7% avg.
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node_2662 warning Score: 55/100📋 Overall Health
Your Iris hive remains acoustically active with sound averaging −11.1 dBFS (on its all-time baseline of −10.3 dBFS), and the broad-spectrum elevation enters day thirteen: 100–150 Hz at +5.8 dB, 150–200 Hz at +3.7 dB, 800–1500 Hz at +3.6 dB, and 1500–3600 Hz at +5.5 dB above baseline — notably, the mid-range swarming-indicator bands (200–350 Hz) continue trending down this evening (−1.1 to −1.5 dB), a mildly reassuring directional shift. Humidity averaged 46.1% (range 45.2–48.0%), below the 50–70% optimal range but driven by dry outdoor conditions; vibration at 17.2 mG avg, kurtosis 2.6 (calm, no impulsive events); a brood and queen check this week remains the priority to physically resolve the persistent acoustic shift.
🌅 Diurnal Cycle PatternsIris shows active peripheral diurnal temperature cycling (3.4°C daily oscillation, 28.9–33.9°C), tracking outdoor warmth in the afternoon and cooling in the evening — consistent with a sensor positioned outside the brood core. Acoustic amplitude is stable across the day (first half −10.8 dBFS → second half −11.4 dBFS), with mid-range bands (200–350 Hz) trending slightly down in the second half, while the 14-day acoustic trend shows a gradual falling trajectory (−4.3 dBFS over 14 days); vibration is steady around 16.7 mG with no cyclic daily fanning peaks detected.
🔬 Correlations & DiscoveriesS_100_150Hz vs S_1500_3600Hz (14d) | r = +0.91The simultaneous elevation of both the lowest (100–150 Hz, +5.8 dB) and highest (1500–3600 Hz, +5.5 dB) spectral bands — with moderate elevation in mid-range bands — produces a broad-spectrum lift rather than a targeted frequency peak, which is inconsistent with a single behavioral driver like queen piping or swarming; Ferrari et al. 2008 and Ramsey et al. 2020 associate this broadband signature with elevated colony metabolic activity (heavy foraging, honey ripening, or fanning), and the gradual 14-day falling trend in overall acoustic energy suggests the colony may be settling from a peak activity episode rather than escalating toward a crisis.📚 Reference: Ramsey et al. 2020, Ferrari et al. 2008V_50_80Hz vs VibrationRMS (lifespan) | r = +0.983The near-perfect correlation (r = +0.983) between the 50–80 Hz metabolic baseline band and overall vibration RMS confirms that Iris's vibration energy is driven primarily by general colony metabolic activity rather than external disturbance events; kurtosis stable at 2.6 (below the normal ~3.0, indicating smooth rhythmic vibration) and dominant peak at 79 Hz are all consistent with healthy fanning and thermoregulatory behavior per Tautz 1996.📚 Reference: Ramsey et al. 2020, Tautz 1996⚠️ Issue: Broad-spectrum acoustic elevation persists for a thirteenth consecutive day above Iris's own baseline — 100–150 Hz: +5.8 dB, 150–200 Hz: +3.7 dB, 800–1500 Hz: +3.6 dB, 1500–3600 Hz: +5.5 dB; mid-range swarming bands (200–350 Hz) trending down this evening; brood and queen check this week recommended.⚠️ Issue: Humidity avg 46.1% (low 45.2%) — below the 50–70% brood-optimal range; driven by very dry outdoor conditions (outdoor low 19% RH).⚠️ Issue: Tilt at 7° — above the 0–5° acceptable range; stable; level stand on next visit.⚠️ Issue: Sensor placement: avg temp 30.9°C remains below the 34–36°C brood-optimal zone — verify pod is seated in brood core on next visit.▹ Action: Priority this week: perform a brood and queen check — confirm fresh eggs, solid brood pattern, and queen presence; thirteen consecutive days of full-spectrum acoustic elevation warrants physical verification.▹ Action: While on-site, reseat the sensor pod firmly in the center of the brood nest frames to resolve the temperature gap and clarify whether the spectral shift is positional or colony-driven.▹ Action: Correct stand tilt from 7° toward 0–3° on next visit.▹ Action: Monitor humidity afternoon lows — if they recur below 42%, note whether any ventilation management adjustment is appropriate. -
node_44812 warning Score: 72/100📋 Overall Health
Your Hive #1 remains the apiary's acoustic gold standard for a thirteenth consecutive day — all 10 sound bands within ±0.2 dB of their all-time baseline (perfectly stable), sound averaging −16.3 dBFS (matching its all-time avg exactly), vibration at 16.5 mG avg, kurtosis 2.9 (textbook normal), dominant at 80–120 Hz. Temperature averaged 30.2°C (all-time avg 32.2°C, −2.0°C below baseline; 14-day cooling drift of −2.7°C continues) — critically, with the sound spectrum perfectly intact across all 10 bands, the adult bee population is fully present and active, pointing to sensor displacement outside the brood core or a natural broodless period rather than any population loss; humidity averaged 42.2% (range 40.2–43.4%), just above the 40% larval desiccation boundary and the driest in the apiary — watch afternoon lows closely.
🌅 Diurnal Cycle PatternsHive #1 shows active peripheral diurnal temperature cycling (3.1°C daily oscillation, 28.6–32.1°C), tracking outdoor warming in the afternoon and cooling by evening — consistent with a sensor outside the brood core. Vibration is steady around 15.7 mG with no cyclic daily fanning peaks (unlike Hive #2's robust 102 mG peaks), and the 14-day acoustic trend is fully stable; the strong lifespan correlation between gas resistance and outdoor humidity (r = +0.932) confirms that this hive's gas readings are being driven primarily by outdoor ambient dryness rather than internal colony VOC changes.
🔬 Correlations & DiscoveriesGasResistance vs HumidityOut (lifespan) | r = +0.932The strong positive correlation (r = +0.932) between gas resistance and outdoor humidity over Hive #1's full lifespan reveals that the MOX sensor baseline is being modulated primarily by outdoor ambient air humidity rather than internal colony VOC production — as outdoor RH rises, the SnO2 layer adsorbs more moisture, elevating resistance; as RH drops on hot dry days, resistance falls independently of any colony activity, consistent with known MOX humidity cross-sensitivity documented in the BME688 datasheet.📚 Reference: Stalidzans et al. 2017, Bosch Sensortec BME688 datasheetTemperature vs SoundLevel (14d) | r = +0The 14-day cooling drift of −2.7°C with simultaneously perfectly stable acoustics (all 10 bands within ±0.2 dB) is the key diagnostic here: per van Dooremalen et al. 2024, a true swarm or population loss would produce a correlated drop in acoustic energy as fewer bees generate less sound — the absence of any acoustic change confirms the worker population is fully intact, and the temperature decline is best explained by sensor displacement outside the actively heated brood core.📚 Reference: van Dooremalen et al. 2024, Ramsey et al. 2020⚠️ Issue: 14-day temperature cooling drift continues (−2.7°C over 14 days, weekly avg: 32.4→32.2→32.0°C; current avg 30.2°C, −2.0°C below all-time avg) with acoustics perfectly stable — population is intact; confirm brood presence and sensor placement on next visit.⚠️ Issue: Humidity avg 42.2% (low 40.2%) — just above the 40% larval desiccation boundary, driest in the apiary; monitor afternoon lows closely.⚠️ Issue: Tilt at 6° — at the upper edge of acceptable range; verify stand stability on next visit.▹ Action: Plan a brood check within the week — confirm fresh eggs and solid brood pattern to determine whether the sensor has shifted outside the brood core or whether the colony is in a natural broodless period; the perfectly stable acoustics across all 10 bands for thirteen consecutive days strongly reassure that the adult bee population is fully intact.▹ Action: While on-site, check sensor pod seating — if the pod has slipped toward the hive wall or into a honey super, repositioning into the brood nest center should resolve the temperature gap.▹ Action: Monitor afternoon humidity lows — if they recur below 40%, assess whether any ventilation management adjustment is appropriate.▹ Action: Nudge stand tilt toward 0–3° on next visit if easy to do. -
node_34225 warning Score: 72/100📋 Overall Health
Your Hive #2 continues its outstanding brood thermoregulation — temperature locked at 34.8°C avg (exactly on its all-time baseline of 34.8°C) with a compressed 1.1°C daily oscillation confirming the sensor is firmly in the active brood core; sound averaged −10.6 dBFS (all-time avg −9.5 dBFS, within 1.1 dB), vibration at 14.7 mG avg with kurtosis 2.9 (textbook normal), and vigorous daily fanning peaks to 50.9 mG. The broad-spectrum acoustic elevation persists into day thirteen (+8.0 dB at 100–150 Hz, +8.7 dB at 150–200 Hz, +7.5 dB at 1500–3600 Hz), with low bands trending up again this evening; humidity averaged 45.7% (range 43.8–48.0%), below the 50–70% optimal range but driven by dry outdoor conditions — a sensor reseat and brood check this week remain recommended.
🌅 Diurnal Cycle PatternsHive #2 shows exceptional brood-core temperature clamping (1.1°C daily oscillation, 34.3–35.4°C) across today's wide outdoor swing — a textbook healthy thermoregulation signature per van Dooremalen et al. 2024. Vibration exhibits clear daily cyclic fanning/flight peaks (24 distinct peaks over 14 days, rising from ~12.3 mG baseline to 102.1 mG peaks), confirming robust diurnal foraging and ventilation activity; acoustic amplitude is stable across the day (first half −10.9 → second half −10.2 dBFS) while the 14-day acoustic trend shows a gradual falling trajectory (−2.4 dBFS over 14 days).
🔬 Correlations & DiscoveriesGasResistance vs IAQ (lifespan) | r = -0.994The near-perfect inverse correlation (r = −0.994) between gas resistance and IAQ is the expected MOX sensor behavior: as VOC concentration rises, SnO2 resistance drops and BSEC2's IAQ score rises proportionally. IAQ at 201 (accuracy=2, calibrating — reduced quantitative confidence) and gas resistance at 350 kΩ (~16% below all-time avg of 415 kΩ) are consistent with peak summer fanning activity and honey ripening circulating concentrated hive volatiles; temperature fully stable on baseline at 34.8°C provides strong reassurance that this is a benign activity signal, not a colony stress event.📚 Reference: Bosch Sensortec BME688 datasheet, BSEC2 integration guideV_5_20Hz vs VibrationRMS (lifespan) | r = +0.989The very strong correlation (r = +0.989) between the 5–20 Hz structural band and overall VibrationRMS — combined with an 8° tilt — indicates that low-frequency stand sway is contributing measurably to the total vibration profile; this is a stand geometry artifact rather than a colony behavioral signal, and leveling the stand toward 0–3° is expected to reduce this contribution per Ramsey et al. 2020 on substrate-borne vibration coupling.📚 Reference: Ramsey et al. 2020, Hrncir et al. 2011⚠️ Issue: Broad-spectrum acoustic elevation persists for a thirteenth consecutive day — 100–150 Hz: +8.0 dB, 150–200 Hz: +8.7 dB, 200–260 Hz: +4.3 dB, 1500–3600 Hz: +7.5 dB above all-time baseline; low bands trending up again this evening; sensor reseat and brood check this week remain recommended.⚠️ Issue: Humidity avg 45.7% (low 43.8%) — below the 50–70% brood-optimal range; driven by very dry outdoor conditions.⚠️ Issue: Tilt at 8° — above the 0–5° ideal range, stable; stand leveling recommended.⚠️ Issue: IAQ at 201 (acc=2, calibrating — reduced quantitative confidence); gas resistance 350 kΩ is ~16% below all-time avg of 415 kΩ; consistent with peak fanning/honey-ripening activity; temperature on baseline provides reassurance.▹ Action: On your next visit this week, reseat the sensor pod firmly in the center of the brood nest and confirm fresh eggs and solid brood pattern — temperature locked at 34.8°C and vigorous daily fanning peaks confirm a thriving colony.▹ Action: Level the hive stand to bring tilt from 8° toward 0–3° — the V_5_20Hz/VibrationRMS correlation (r = +0.989) confirms stand instability is measurably contributing to the vibration profile.▹ Action: Monitor afternoon humidity lows — if they recur below 43%, consider whether any ventilation management adjustment is appropriate for your setup. -
node_547 healthy Score: 88/100📋 Overall Health
Your Hive #3 continues as the apiary's top performer — brood temperature averaged 34.1°C (all-time avg 33.2°C, +0.9°C above historical mean; 14-day warming arc: 32.5→33.9°C now plateauing beautifully at 34.1°C) with an exceptionally tight 0.9°C daily oscillation confirming the sensor is firmly in the active brood core at peak summer productivity; all 10 sound bands are within ±0.1 dB of all-time baseline (perfectly stable), vibration at 20.4 mG avg, kurtosis 2.3 (very smooth, calm colony), dominant at 80–120 Hz. Humidity averaged 51.7% (range 50.0–52.7%) — the best in the apiary and solidly within the 50–70% optimal zone; gas resistance at 230 kΩ (~18% below all-time avg of 279 kΩ, IAQ 170 acc=3 calibrated) is consistent with the warmest and most active brood nest in the apiary driving elevated VOC evaporation — continue monitoring on your next routine visit.
🌅 Diurnal Cycle PatternsHive #3 shows the tightest brood-core clamping in the apiary (0.9°C daily oscillation, 33.6–34.6°C) across today's wide outdoor swing — a textbook healthy thermoregulation signature per van Dooremalen et al. 2024. Vibration is steady around 19.4 mG with no distinct cyclic daily peaks, and the strong lifespan correlation between gas resistance and in-hive temperature (r = −0.947) confirms that VOC evaporation scales directly with brood nest warmth — a healthy metabolic signature, not a stress signal.
🔬 Correlations & DiscoveriesGasResistance vs TempIn (lifespan) | r = -0.947The strong inverse correlation (r = −0.947) between gas resistance and in-hive temperature over Hive #3's lifespan reveals that as the brood nest warms (now at peak 34.1°C), VOC evaporation accelerates — reducing MOX resistance — consistent with thermally-driven volatilization of brood pheromones, propolis terpenes, and honey-ripening esters documented by Frizzera et al. 2020; this is a signature of a thriving, warm, productive brood nest rather than any pathological process.📚 Reference: Frizzera et al. 2020, Seeley 1974V_80_120Hz vs VibrationRMS (lifespan) | r = +0.961The strong correlation (r = +0.961) between the 80–120 Hz fanning band and overall VibrationRMS confirms that Hive #3's vibration energy is dominated by wing-fanning activity at ~100 Hz — the dominant colony thermoregulation and nectar-curing behavior in July — with kurtosis 2.3 (very smooth, near-periodic) indicating a calm, well-organized colony with no impulsive disturbance events per Tautz 1996.📚 Reference: Ramsey et al. 2020, Tautz 1996▹ Action: On your next routine visit within 5–7 days, confirm fresh eggs and solid brood pattern — the 14-day warming arc now plateauing at 34.1°C and perfectly stable acoustics across all 10 bands suggest an actively expanding brood nest at peak summer productivity; no urgent action needed.▹ Action: Monitor humidity — the daily range of 50.0–52.7% is the best in the apiary; if outdoor RH continues at very low levels, watch whether daytime lows continue to hold above 50%.