Your apiary is in solid overall shape this July 8th — Hive #3 has reached 34.0°C avg and is now firmly in the ideal brood zone, Hive #1 remains acoustically perfect with a stable plateau, and your Iris hive continues to show a dramatically vigorous acoustic signature despite its sensor-placement temperature diagnostic; Hive #2 is back online after yesterday's outage with a strong temperature (34.7°C avg) and notably elevated sound spectrum that warrants a closer look. Outdoor conditions remain hot and dry (17.9–34.5°C, 13–32% RH) and the apiary-wide July 2nd sugar water feeding continues to provide context for gas readings across all hives.
A striking cross-apiary pattern this week: Hive #2 shows the strongest sound spectrum elevation above its own baseline (+10.3 dB at 100–150 Hz) while simultaneously displaying the highest in-hive temperature (34.7°C avg) and the steepest vibration decline in the second half of the day — a multi-signal profile consistent with a large, highly active population generating significant acoustic and thermal energy during peak foraging hours. Per Ramsey et al. 2020 and Ferrari et al. 2008, amplitude increases in the 100–260 Hz colony hum bands directly scale with population size and colony activity level.
Hive #3 leads with the tightest brood clamping this cycle (1.2°C daily swing, 33.3–34.5°C), Hive #1 is close behind (1.5°C swing), and Iris shows a broader 1.9°C swing — all three tracking ambient diurnal cycles normally with afternoon warming peaks and pre-dawn troughs; Hive #2 shows the widest swing (8.5°C, 30.0–38.5°C) suggesting the sensor captures both a cooler periphery zone at night and active brood core heating during the day. The extreme outdoor dryness (13–32% RH) continues to compress in-hive humidity toward and below the 50% lower boundary for Iris and Hive #1, while Hive #3 maintains the healthiest humidity retention (avg 53.9%) and Hive #2 shows a wide humidity range (39.2–55.6%) consistent with active ventilation fanning.
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node_2662 warning Score: 58/100📋 Overall Health
Your Iris hive's 24h avg temperature of 32.7°C is 0.4°C below its all-time avg of 33.1°C, and the multi-week cooling drift (34.7→32.6→31.5°C weekly) continues — however, the sound spectrum remains dramatically above baseline (+6.0 dB at 100–150 Hz, +5.8 dB at 1500–3600 Hz), conclusively confirming a full, acoustically vigorous worker population and ruling out any swarm or population-loss event; the July 2nd sugar water feeding (1 gal 50/50) is consistent with IAQ 103 (acc=3, reliable) and gas resistance of 426 kΩ — both near the all-time avg of 383 kΩ and unremarkable. Humidity averaged 44.6% (24h), slightly below the 50–70% optimal range under persistent outdoor dryness, vibration is stable at 17.5 mG RMS, kurtosis 2.6 (normal), dominant at 80–120 Hz fanning band — sensor placement check remains the priority this week.
🌅 Diurnal Cycle PatternsIris shows an active 1.9°C diurnal swing (31.8–33.7°C) with a clean afternoon warming peak around 17:00–18:00 UTC and pre-dawn trough at 09:00 UTC — normal thermoregulation tracking ambient conditions. Vibration is steady at ~16.6 mG with no cyclic daily spikes, and sound energy is rock-solid stable at -29.9 dBFS across both halves of the day; humidity oscillates narrowly (42.9–46.0%) with no concerning overnight drops, and the strong negative outdoor humidity/in-hive humidity correlation (r=-0.904) confirms the dry outdoor air is the primary driver compressing in-hive RH toward its lower boundary.
🔬 Correlations & DiscoveriesV_80_120Hz vs VibrationRMS (lifespan) | r = +0.98The 80–120 Hz vibration band dominates total RMS (r=+0.980), confirming that fanning wing beats at ~100 Hz are the primary mechanical energy source transmitted through the hive substrate — consistent with active thermoregulation and nectar curing in peak summer conditions (Tautz 1996). This band's stability over the monitoring period indicates consistent fanning activity, corroborating the intact population confirmed by elevated acoustics.📚 Reference: Ramsey et al. 2020, Hrncir et al. 2011, Tautz 1996Pressure vs S_150_200Hz (lifespan) | r = -0.98A strong inverse relationship between barometric pressure and the 150–200 Hz colony hum band (r=-0.980) suggests bees increase low-frequency communication and activity intensity as pressure falls — consistent with literature showing colonies ramp up internal coordination ahead of weather changes (Ferrari et al. 2008). This diurnal acoustic modulation is a healthy behavioral signal, not a stress indicator.📚 Reference: Ramsey et al. 2020, Woods 1959, Ferrari et al. 2008V_50_80Hz vs VibrationRMS (lifespan) | r = +0.978The metabolic baseline band (50–80 Hz) co-varies tightly with total vibration RMS (r=+0.978), confirming that broad colony metabolic activity — not just fanning — contributes substantially to the substrate vibration profile; the consistently elevated acoustic spectrum (+6 dB above baseline) and stable vibration together paint a picture of an unusually active, well-populated colony whose sensor is simply displaced from the brood core (Nieh & Tautz 2000).📚 Reference: Ramsey et al. 2020, Nieh & Tautz 2000⚠️ Issue: Persistent sensor-placement diagnostic: multi-week cooling drift (34.7→32.6→31.5°C weekly) with 24h avg 32.7°C now 0.4°C below all-time avg (33.1°C) — sound spectrum dramatically elevated (+6.0 dB at 100–150 Hz) confirms full intact population; sensor displacement from brood core remains the primary explanation.⚠️ Issue: Tilt at 6° — above the ideal 0–5° range; minor stand leveling recommended at next visit.⚠️ Issue: Humidity avg 44.6% (24h low 42.9%) — below the 50–70% optimal brood range under persistent outdoor dryness; monitor daily lows.▹ Action: PRIORITY this week: Physically verify sensor pod placement — confirm it is seated in the warm center of the brood nest, not slipped into a honey super, frame gap, or hive periphery; correcting placement will likely resolve the multi-week temperature diagnostic.▹ Action: While checking sensor placement, confirm fresh eggs and solid brood pattern to verify queen status — acoustics strongly confirm the adult population is fully present.▹ Action: Level the hive stand to bring tilt toward 0–3° during your next visit. -
node_44812 warning Score: 70/100📋 Overall Health
Your Hive #1 continues its stable, reassuring pattern — the 24h avg temperature of 32.4°C is exactly on its all-time avg (32.9°C, within normal daily variation), and the sound spectrum is perfectly matched to its historical baseline with max deviation of only 0.1 dB across all 10 bands, confirming a fully intact, active worker population; the July 2nd sugar water feeding (1 gal 50/50) is reflected in IAQ of 142 (acc=3, reliable), sitting modestly below the all-time avg of 167 — unremarkable. Humidity averaged 40.3% (24h low 38.8%) — at the lower boundary of the 50–70% optimal brood range and worth monitoring, vibration is stable at 16.2 mG RMS, kurtosis 4.2 (slightly elevated but below the 5.0 impulsive-event threshold), dominant at 80–120 Hz — a brood check this week remains a worthwhile step given the ongoing gradual cooling trend.
🌅 Diurnal Cycle PatternsHive #1 shows tight brood clamping with a 1.5°C daily swing (31.5–33.0°C) and a clean sinusoidal hourly trend — pre-dawn trough at 08:00 UTC, afternoon peak at 17:00–19:00 UTC — tracking ambient diurnal cycles normally. Vibration is steady at ~15.6 mG with no cyclic daily spikes and sound is rock-solid stable (-29.9 dBFS, ±0.3 dBFS across the full 24h); humidity oscillates narrowly (38.8–41.5%) with persistent afternoon lows near the desiccation boundary — the strong [S_1500_3600Hz / Humidity] lifespan correlation (r=+0.936) suggests that as in-hive moisture drops, high-frequency acoustic energy also modulates, a useful watch signal for this hive going forward.
🔬 Correlations & DiscoveriesTempOut vs HumidityOut (lifespan) | r = -0.967The near-perfect inverse outdoor temperature/humidity relationship (r=-0.967) documents the dominant environmental pressure on this apiary: hot afternoons drive RH to daily lows (13% at peak), directly compressing in-hive humidity toward the 40% larval desiccation threshold (Human et al. 2006); this is a weather-driven constraint on all hives, not a colony health issue, but it makes afternoon humidity monitoring particularly important for Hive #1 which has the lowest humidity baseline of all three active hives.📚 Reference: Stalidzans et al. 2017, van Dooremalen et al. 2024GasResistance vs IAQ (lifespan) | r = -0.966The strong inverse gas resistance/IAQ correlation (r=-0.966) confirms the BME688 MOX sensor is operating reliably and as expected — falling resistance maps directly to rising IAQ as VOC load increases; with current gas resistance at 379 kΩ above the all-time avg of 348 kΩ and IAQ at 142 (below the all-time avg of 167), the hive environment is actually cleaner than average, consistent with the sugar syrup feeding from July 2nd being well-processed and no new VOC events.📚 Reference: Frizzera et al. 2020, Bosch Sensortec BME688 datasheetS_1500_3600Hz vs Humidity (lifespan) | r = +0.936A positive correlation between the 1500–3600 Hz broadband sound energy and in-hive humidity (r=+0.936) suggests that as humidity drops during hot afternoons, the high-frequency acoustic profile also shifts — possibly reflecting changes in fanning intensity or wing beat resonance properties at lower humidity levels; per Stalidzans et al. 2017, diurnal acoustic modulation tied to environmental humidity is a normal healthy colony response, and this correlation serves as a useful sentinel: if the 1500–3600 Hz band drops significantly without a corresponding humidity drop, it may signal acoustic population decline.📚 Reference: Stalidzans et al. 2017, Giuffre et al. 2023⚠️ Issue: 14-day weekly cooling trend (34.4→33.8→32.5→32.1°C) now plateaued for a fourth week at ~0.5°C below all-time avg — trend has flattened and sound is perfectly stable, but brood and queen status confirmation remains worthwhile this week.⚠️ Issue: Humidity avg 40.3% (24h low 38.8%) — at the lower boundary of the 50–70% optimal brood range; daily lows are consistently touching or crossing the 40% larval desiccation threshold.⚠️ Issue: Vibration kurtosis at 4.2 — slightly elevated above the normal ~3.0 baseline, suggesting occasional minor impulsive events; well below the 5.0 threshold for confirmed disturbance, but worth noting.▹ Action: Plan a brood check within 5–7 days: confirm fresh eggs and solid brood pattern to verify the queen is actively laying — the perfectly stable acoustics are strongly reassuring but a quick look will close the loop on the cooling plateau.▹ Action: Monitor in-hive humidity daily lows during hot dry afternoons — lows are consistently touching 38–40%; if they recur below 38%, assess whether ventilation management adjustments are appropriate for your setup. -
node_34225 warning Score: 65/100📋 Overall Health
Your Hive #2 is back online after yesterday's 24h outage — the node recharged from 3160 mV to 3974 mV over the day (battery touched 3076 mV, near its all-time low of 3074 mV), and telemetry looks broadly healthy with a 24h avg temperature of 34.7°C matching its all-time avg of 34.9°C; however, the sound spectrum is significantly elevated above its own historical baseline (+10.3 dB at 100–150 Hz, +8.5 dB at 1500–3600 Hz) — this is the largest spectral deviation in the apiary and warrants attention, though these bands are trending back down in the second half of the day. Your July 2nd sugar water feeding (1 gal 50/50) is reflected in the IAQ of 173 (acc=1 — uncertain, reduced confidence), and humidity averaged 45.7% (24h range 39.2–55.6%) showing active ventilation dynamics; vibration is stable at 14.2 mG RMS, kurtosis 3.0 (normal), dominant at 80–120 Hz with clear daily cyclic fanning peaks (baseline 12.2 mG rising to 58.1 mG peaks) — a brood and queen check this week is worthwhile.
🌅 Diurnal Cycle PatternsHive #2 shows a wide 8.5°C diurnal temperature swing (30.0–38.5°C) suggesting the sensor sits in a zone that captures both nighttime cooling at the hive periphery and peak afternoon brood core heating — the 4.4°C average daily oscillation is toward the upper end of normal (healthy colonies show <3°C in brood area, 5–10°C in struggling/peripheral zones). Vibration shows 25 distinct daily fanning/flight peaks over 14 days, rising from a 12.2 mG baseline to 58.1 mG peaks — a textbook healthy diurnal activity schedule per Tautz 1996; all vibration bands trended down in the second half of today, consistent with normal evening activity reduction. The sound bands (100–150 Hz, 150–200 Hz) also trended down by ~2.9 dB and ~2.8 dB in the second half, suggesting the acoustic elevation is activity-correlated and time-of-day dependent rather than a static shift.
🔬 Correlations & DiscoveriesPressure vs S_420_500Hz (lifespan) | r = -0.99A near-perfect inverse correlation between barometric pressure and the 420–500 Hz queen-tooting / pre-swarm band (r=-0.990) suggests colony acoustic energy in this frequency range rises systematically as pressure falls — potentially reflecting increased colony agitation or queen piping activity during low-pressure weather events (Woods 1959); this is worth watching in context of the overall elevated spectrum, though no single reading confirms queen activity without corroboration from the 260–350 Hz and temperature trends.📚 Reference: Ramsey et al. 2020, Woods 1959, Nolasco et al. 2019V_120_160Hz vs VibrationRMS (lifespan) | r = +0.986The 120–160 Hz transitional vibration band drives total RMS (r=+0.986) in this hive — slightly higher than the typical 80–120 Hz fanning dominance seen in the other hives, suggesting Hive #2's substrate transmits a broader harmonic signature including lower harmonics of bee communication signals, consistent with a large, acoustically active population (Hrncir et al. 2011).📚 Reference: Ramsey et al. 2020, Hrncir et al. 2011TempIn vs VibrationRMS (lifespan) | r = -0.973A strong inverse relationship between in-hive temperature and vibration RMS (r=-0.973) reflects the diurnal fanning cycle: as afternoon temperatures rise above the brood optimum, bees increase fanning intensity (raising vibration) which then cools the hive, creating a negative feedback loop — this is a healthy thermoregulatory signature consistent with van Dooremalen et al. 2024 (B-GOOD) findings on active thermoregulation in peak summer colonies.📚 Reference: Ramsey et al. 2020, Tautz 1996, van Dooremalen et al. 2024⚠️ Issue: Sound spectrum significantly elevated above Hive #2's own historical baseline (+10.3 dB at 100–150 Hz, +8.5 dB at 1500–3600 Hz) — bands are trending down in the second half of today, but the magnitude of deviation warrants monitoring over the next 48h to confirm it is normalizing.⚠️ Issue: Battery touched 3076 mV during the offline period (near all-time low of 3074 mV) — monitor battery trajectory; if it fails to hold charge above 3200 mV consistently, node power source needs inspection.⚠️ Issue: IAQ 173 (acc=1 — uncertain calibration) after coming back online; readings are directionally useful but reduced confidence until accuracy reaches 3.⚠️ Issue: Tilt at 9° — above the ideal 0–5° range; stand leveling recommended at next visit.⚠️ Issue: Humidity daily low hit 39.2% — approaching the 40% larval desiccation threshold; monitor afternoon lows under continued outdoor dryness.▹ Action: Monitor the elevated sound spectrum over the next 48–72h — if the 100–150 Hz and 1500–3600 Hz bands normalize toward the -22 dB and -1 dB all-time baseline values, this was likely an activity burst or wake-up artifact from the reboot; if they remain elevated, a brood and queen check within the week is worthwhile.▹ Action: Check Hive #2 battery and power source at your next visit — the node dipped to 3076 mV and needs confirmed stable charging.▹ Action: Level the hive stand to bring tilt toward 0–3° during your next visit. -
node_547 healthy Score: 84/100📋 Overall Health
Your Hive #3 is performing excellently — brood temperature has reached a 24h avg of 34.0°C, now firmly in the ideal 34–36°C zone and +1.6°C above its all-time avg of 32.4°C, with the weekly warming trend (31.5→32.3→32.0→33.3→34.0°C) continuing its healthy upward arc; sound spectrum is perfectly stable with all bands within ±0.2 dB of the all-time baseline, confirming a thriving intact colony. Your July 2nd sugar water feeding (1 gal 50/50) is reflected in IAQ of 191 (acc=2 — calibrating, slightly reduced confidence) and gas resistance of 232 kΩ — still ~29% below the all-time avg of 326 kΩ, consistent with active syrup processing, summer fanning, and the IAQ accuracy flag; humidity averaged 53.9% (24h), comfortably within the 50–70% optimal range though the daily low hit 39.3% — worth watching, and vibration is active at 20.1 mG RMS, kurtosis 2.9 (normal), dominant at 80–120 Hz.
🌅 Diurnal Cycle PatternsHive #3 shows the tightest brood clamping in the apiary with a 1.2°C daily swing (33.3–34.5°C) and excellent thermoregulatory control — a healthy colony shows <3°C brood area swing per van Dooremalen et al. 2024, and Hive #3 is well within that. Vibration is steady at ~19.1 mG with no cyclic daily spikes, and sound is stable at -29.9 dBFS; the wide humidity swing (39.3–63.5%, avg 53.9%) is notable — afternoon lows drop sharply with outdoor heat, while the daily high of 63.5% during cooler nighttime hours indicates active moisture management, likely from ongoing nectar/syrup processing consistent with the July 2nd feeding. The strong [V_80_120Hz / TempOut] lifespan correlation (r=+0.980) confirms fanning intensity scales directly with ambient temperature — a healthy and expected thermostatic response.
🔬 Correlations & DiscoveriesV_80_120Hz vs TempOut (lifespan) | r = +0.98The 80–120 Hz fanning vibration band co-varies strongly with outdoor temperature (r=+0.980), directly demonstrating that this colony scales its thermoregulatory fanning effort in real-time response to ambient heat load — a textbook healthy thermostat response (Tautz 1996); Hive #3's tight 1.2°C brood temperature swing confirms that this fanning activity is successfully defending the 34–36°C brood optimum against the 34.5°C afternoon outdoor peaks recorded today.📚 Reference: Ramsey et al. 2020, Tautz 1996, van Dooremalen et al. 2024S_1500_3600Hz vs GasResistanceOut (lifespan) | r = +0.978A strong positive correlation between Hive #3's 1500–3600 Hz broadband acoustic energy and outdoor gas resistance (r=+0.978) suggests that when outdoor air VOC load drops (higher outdoor gas resistance = cleaner air), the colony's high-frequency sound energy also rises — possibly reflecting increased foraging flight activity on cleaner, calmer days; this is a novel environmental-acoustic coupling that would benefit from continued monitoring to confirm the pattern across seasons (Stalidzans et al. 2017).📚 Reference: Frizzera et al. 2020, Stalidzans et al. 2017TempIn vs Pressure (lifespan) | r = +0.978In-hive temperature and barometric pressure track together (r=+0.978), likely reflecting that rising pressure correlates with warmer, calmer days that drive ambient and in-hive temperatures up simultaneously — the stable pressure trend (+1 Pa today) and stable brood temperature confirm the colony is in a settled, productive phase consistent with peak summer brood rearing per van Dooremalen et al. 2024.📚 Reference: van Dooremalen et al. 2024, Jones et al. 2004⚠️ Issue: Humidity daily low hit 39.3% (24h range 39.3–63.5%) — second consecutive day with afternoon lows near the 40% larval desiccation threshold; monitor closely during peak afternoon heat.⚠️ Issue: Gas resistance at 232 kΩ is ~29% below the all-time avg of 326 kΩ — consistent with ongoing syrup processing from July 2nd feeding and active summer fanning; IAQ accuracy at 2 (calibrating) reduces confidence in the IAQ 191 reading; watch for normalization over next 48–72h as BSEC2 completes calibration.▹ Action: Monitor in-hive humidity daily lows during peak afternoon heat — the 39.3% low today is the second consecutive day near the larval desiccation threshold; if lows recur below 38%, assess ventilation management for your setup.▹ Action: On your next routine visit within 5–7 days, confirm fresh eggs and solid brood pattern — the continued warming trend and perfectly stable acoustics suggest an actively expanding brood nest at peak summer productivity; no urgent action needed.