Your apiary is in good overall shape this July 9th — Hive #3 is the standout performer with brood temp locked at 34.0°C and perfectly stable acoustics, Hive #1 continues its reliable plateau, and Hive #2 is fully recovered with excellent temperature and a fascinating persistent acoustic elevation that warrants a brood check this week; your Iris hive's sensor-placement diagnostic continues with the multi-week cooling drift still active but the colony acoustically vigorous. The July 2nd sugar water feeding context remains relevant for gas readings across all hives, and outdoor conditions remain hot and dry (16–34°C, 15–46% RH) keeping in-hive humidity under pressure apiary-wide.
Hive #2's persistent lifespan correlation between barometric pressure and the 420–500 Hz (queen tooting) and 200–260 Hz (swarm indicator) acoustic bands (r = -0.992 and -0.976) is a striking multi-week pattern — as local pressure rises, energy in these biologically significant bands falls, suggesting the colony's acoustic communication intensity modulates with weather cycles in a manner consistent with Ramsey et al. 2020's findings on environmental entrainment of colony vibro-acoustic behavior. Across the apiary, all four hives share the same strong outdoor temp/humidity anti-correlation (r ≈ -0.95 to -0.97), confirming tight hyper-local environmental synchrony driving the persistent in-hive humidity stress observed apiary-wide.
Hive #3 leads the apiary with the tightest brood clamping (only 0.8°C daily swing, 33.5–34.3°C), followed by Hive #2 which has dramatically stabilized to a 1.0°C swing (34.6–35.6°C) compared to yesterday's 8.5°C — a significant improvement; Iris shows a 2.8°C swing (31.1–33.9°C) and Hive #1 a 2.0°C swing (31.1–33.1°C), both tracking ambient diurnal cycles normally with afternoon warming peaks and pre-dawn troughs. Outdoor dryness (15–46% RH) continues to compress in-hive humidity toward or below the 50% lower boundary for Iris and Hive #1, while Hive #3 maintains the best retention (avg 52%) and Hive #2 has stabilized to a narrow 42–44% band.
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node_2662 warning Score: 57/100📋 Overall Health
Your Iris hive remains acoustically vigorous — sound level is rock-steady at -29.9 dBFS (exactly matching the all-time avg) with spectrum still elevated above baseline (+6.1 dB at 100–150 Hz, +5.8 dB at 1500–3600 Hz), confirming a full, active worker population; the July 2nd sugar water feeding (1 gal 50/50) is consistent with IAQ 102 (acc=3, reliable) and gas resistance 424 kΩ near the all-time avg of 385 kΩ — unremarkable. The multi-week cooling drift (34.7→32.6→31.7°C weekly) continues with a 24h avg of 32.3°C, now 0.7°C below the all-time avg of 33.0°C — sensor placement verification remains the priority, and humidity averaged 43.5% (below the 50–70% optimal range) under persistent outdoor dryness.
🌅 Diurnal Cycle PatternsIris shows a 2.8°C daily swing (31.1–33.9°C) with a classic afternoon warming peak at 33.7–33.8°C and a pre-dawn trough around 31.2°C, tracking ambient cycles normally — the swing is within the healthy <3°C brood-area benchmark (van Dooremalen et al. 2024). Sound is perfectly flat across the full 24h (-29.9 dBFS both halves), vibration steady at 17.6 mG avg with kurtosis 2.5 (normal, slightly smooth), dominant at 80–120 Hz fanning band; humidity is compressed into a narrow 41.5–45.4% band with no diurnal recovery above 50%, reflecting persistent outdoor dryness.
🔬 Correlations & DiscoveriesPressure vs S_150_200Hz (lifespan) | r = -0.972Over Iris's full 19-day history, rising barometric pressure consistently correlates with decreasing energy in the 150–200 Hz colony baseline hum band — as pressure rises (weather clearing), bees reduce low-frequency communication/fanning intensity, likely reflecting reduced thermoregulatory demand on clearer, lower-humidity days (Ramsey et al. 2020). This is a weather-entrained acoustic modulation pattern, not a colony health concern.📚 Reference: Ramsey et al. 2020, Ferrari et al. 2008, Woods 1959V_80_120Hz vs VibrationRMS (lifespan) | r = +0.981The 80–120 Hz fanning band dominates total vibration RMS with a near-perfect lifespan correlation (r=0.981), confirming that virtually all substrate-borne vibration energy in Iris originates from active ventilation fanning — a healthy colony signal consistent with summer thermoregulation activity (Tautz 1996).📚 Reference: Ramsey et al. 2020, Hrncir et al. 2011, Tautz 1996⚠️ Issue: Multi-week cooling drift continues (34.7→32.6→31.7°C weekly avg, 24h avg 32.3°C now 0.7°C below all-time avg of 33.0°C) — sound spectrum confirms full intact population; sensor displacement from brood core remains the primary explanation.⚠️ Issue: Tilt at 8° — above the ideal 0–5° range and increased from yesterday's 6°; stand leveling recommended at next visit.⚠️ Issue: Humidity avg 43.5% (24h low 41.5%) — consistently below the 50–70% optimal brood range under persistent outdoor dryness.▹ 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 or frame gap; 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 reassuringly stable pattern — sound is perfectly matched to its all-time baseline with max deviation of only 0.2 dB across all 10 bands (STABLE flag confirmed), and temperature averaged 32.1°C, just 0.7°C below the all-time avg of 32.8°C within normal daily variation; your July 2nd sugar water feeding (1 gal 50/50) is reflected in IAQ 135 (acc=3, reliable), sitting below the all-time avg of 165 — unremarkable. Humidity averaged 39.9% (24h low 38.8%), consistently at or below the 40% larval desiccation boundary under persistent outdoor dryness — this remains the key watch item, and vibration is stable at 16.4 mG RMS, kurtosis 2.7 (normal), dominant at 80–120 Hz.
🌅 Diurnal Cycle PatternsHive #1 shows a healthy 2.0°C daily swing (31.1–33.1°C) with afternoon peak at 33.0°C and pre-dawn trough at 31.2°C, tracking ambient cycles normally and within the <3°C healthy brood benchmark; sound is perfectly flat at -29.9 dBFS across both halves of the day, and the 14-day long-term acoustic trend is confirmed stable. Vibration holds a steady 15.7 mG with no cyclic daily peaks detected, and humidity is compressed into a very narrow 38.8–41.1% band — the entire diurnal range is at or below the 40% optimal lower boundary, with no recovery above 42% at any point in the 24h cycle.
🔬 Correlations & DiscoveriesGasResistance vs IAQ (lifespan) | r = -0.976Hive #1's near-perfect inverse gas resistance / IAQ relationship (r=-0.976) over 19 days confirms the BSEC2 algorithm is functioning correctly — as VOC load increases (resistance falls), IAQ rises proportionally, consistent with active summer fanning, syrup processing from the July 2nd feeding, and normal brood pheromone activity (Frizzera et al. 2020). The current gas resistance of 386 kΩ is actually above the all-time avg of 350 kΩ, suggesting the syrup VOC pulse from the feeding has largely cleared.📚 Reference: Frizzera et al. 2020, Bosch Sensortec BME688 datasheet, BSEC2 integration guideBattery vs HumidityOut (lifespan) | r = -0.926Battery voltage rises as outdoor humidity falls (hot dry afternoons = peak solar charging), creating a spurious anti-correlation driven entirely by shared diurnal solar cycling rather than any biological relationship — a good reminder that high correlation coefficients require physical interpretation before drawing conclusions (Stalidzans et al. 2017).📚 Reference: Stalidzans et al. 2017, Cepero et al. 2023⚠️ Issue: Humidity avg 39.9% (24h low 38.8%, high only 41.1%) — the entire 24h humidity range is at or below the 40% larval desiccation threshold with no recovery into the optimal 50–70% zone; consistent for multiple days under outdoor dryness.⚠️ Issue: 14-day weekly cooling trend (34.4→33.8→32.5→32.2°C) has plateaued for a fourth week at ~0.6°C below all-time avg — sound is perfectly stable and reassuring, but brood and queen status confirmation remains worthwhile.▹ 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 peak afternoon heat — lows are consistently touching 38–39%; if they recur below 38%, assess whether ventilation management adjustments are appropriate for your setup. -
node_34225 warning Score: 68/100📋 Overall Health
Your Hive #2 has stabilized impressively — the 24h avg temperature of 34.8°C matches the all-time avg of 34.8°C exactly, and the dramatic 8.5°C swing from yesterday has compressed to just 1.0°C (34.6–35.6°C), the tightest regulation we've seen; battery has recovered strongly to 4166 mV (+192 mV over 24h). However, the sound spectrum remains significantly elevated above its own historical baseline (+7.9 dB at 100–150 Hz, +9.5 dB at 150–200 Hz, +8.0 dB at 1500–3600 Hz) — this is now the second consecutive day of elevation, warranting a brood and queen check this week; your July 2nd sugar water feeding (1 gal 50/50) is reflected in IAQ 163 (acc=1 — uncertain calibration, reduced confidence), and humidity averaged 43.5% (24h range 42.4–44.4%), below the 50–70% optimal range.
🌅 Diurnal Cycle PatternsHive #2's temperature has stabilized to an exceptionally tight 1.0°C daily oscillation (34.6–35.6°C) — a dramatic improvement from yesterday's 8.5°C swing — suggesting the sensor has settled into a stable zone or the colony has intensified thermoregulation; sound is stable at -29.8 dBFS both halves of the day, but spectral energy remains persistently elevated (9.5 dB above baseline at 150–200 Hz). Vibration averaged 13.0 mG with kurtosis 3.1 (normal), dominant at 80–120 Hz, with all vibration bands trending upward in the second half of the day (+1.3–1.6 dB) consistent with afternoon fanning activity; humidity holds a narrow 42.4–44.4% band with no recovery into the optimal range.
🔬 Correlations & DiscoveriesPressure vs S_420_500Hz (lifespan) | r = -0.992Hive #2 shows a remarkably tight inverse relationship between barometric pressure and energy in the 420–500 Hz queen-tooting/pre-swarm band over its full 26-day history — as pressure rises, acoustic energy in this biologically sensitive band falls consistently. This likely reflects weather-driven changes in colony communication intensity rather than any queen event, but the strength of the correlation (r=-0.992) makes it a valuable apiary-specific behavioral fingerprint worth tracking (Ramsey et al. 2020).📚 Reference: Ramsey et al. 2020, Woods 1959, Seeley & Tautz 2001Pressure vs S_200_260Hz (lifespan) | r = -0.976A parallel pressure-acoustic correlation exists at 200–260 Hz (the swarming indicator band, r=-0.976) — both the pre-swarm and queen-tooting bands modulate together with barometric pressure, suggesting these frequency channels in Hive #2 are weather-entrained rather than reflecting active queen or swarm events; this multi-band pressure coupling is consistent with colony-wide acoustic response to atmospheric conditions (Ferrari et al. 2008).📚 Reference: Woods 1959, Ferrari et al. 2008, Zgank 2021⚠️ Issue: Sound spectrum persistently elevated above Hive #2's own historical baseline for a second consecutive day (+9.5 dB at 150–200 Hz, +8.0 dB at 1500–3600 Hz) — warrants a brood and queen check this week to confirm normal colony activity.⚠️ Issue: IAQ 163 with acc=1 (uncertain calibration) — readings are directionally useful but reduced confidence; watch for accuracy to reach 3 over the next 48–72h.⚠️ Issue: Tilt at 8° — above the ideal 0–5° range; stand leveling recommended at next visit.⚠️ Issue: Humidity avg 43.5% — below the 50–70% optimal brood range under continued outdoor dryness.▹ Action: Plan a brood and queen check within the week — confirm fresh eggs and solid brood pattern; the persistent spectral elevation across low and high frequency bands is worth investigating in person.▹ Action: Monitor IAQ accuracy flag — once it reaches 3 (calibrated), gas resistance readings will become more reliable for trend comparison; current IAQ 163 with acc=1 is directional only.▹ Action: Level the hive stand to bring tilt toward 0–3° during your next visit. -
node_547 healthy Score: 82/100📋 Overall Health
Your Hive #3 is the apiary's top performer today — brood temperature is locked at 34.0°C avg (range 33.5–34.3°C), squarely in the ideal 34–36°C zone and +1.5°C above the all-time avg of 32.5°C, with the 14-day warming trend (+1.7°C over 14 days) confirming continued healthy brood nest expansion; sound spectrum is perfectly stable with all 10 bands within ±0.1 dB of the all-time baseline. Your July 2nd sugar water feeding (1 gal 50/50) is reflected in gas resistance of 210 kΩ (35% below the all-time avg of 321 kΩ) and IAQ 210 (acc=2 — calibrating, slightly reduced confidence) — fanning and syrup processing are the most likely drivers; humidity averaged 52.0% (comfortably in the 50–70% optimal range), the best in the apiary, and vibration is active at 20.4 mG RMS, kurtosis 2.8 (normal), dominant at 80–120 Hz.
🌅 Diurnal Cycle PatternsHive #3 shows the tightest brood clamping in the apiary — only 0.8°C daily swing (33.5–34.3°C) — demonstrating excellent thermoregulation consistent with a strong, well-populated colony; however, humidity shows a wide diurnal swing (37.3–60.3%), with afternoon lows dipping below 40% under peak outdoor heat despite a healthy daily avg of 52.0%. Sound is perfectly flat at -29.9 dBFS across both halves of the day, vibration steady at 19.2 mG with no cyclic daily peaks, and gas resistance tracks inversely with the warming brood temperature (r=-0.976 lifespan correlation) — consistent with increased fanning and pheromone activity as the colony expands.
🔬 Correlations & DiscoveriesGasResistance vs TempIn (lifespan) | r = -0.976As Hive #3's brood temperature has warmed from 32.2°C to 34.0°C over the past 14 days, gas resistance has fallen proportionally (r=-0.976) — a biologically coherent pattern where a larger, warmer brood nest produces more pheromones (E-beta-ocimene, brood recognition volatiles), more fanning activity, and more active honey/syrup processing, all of which reduce MOX sensor resistance (Frizzera et al. 2020). This is a healthy brood expansion signal, not a colony stress indicator.📚 Reference: Frizzera et al. 2020, Stalidzans et al. 2017, Seeley 1974TempIn vs Pressure (lifespan) | r = +0.974In-hive temperature and barometric pressure show a strong positive lifespan correlation (r=0.974) — rising pressure (fair weather systems) correlates with higher brood nest temps, likely because stable high-pressure weather permits peak foraging and maximum colony metabolic activity, while falling pressure (incoming weather) reduces forager traffic and slightly relaxes brood heating demand (van Dooremalen et al. 2024).📚 Reference: van Dooremalen et al. 2024, Human et al. 2006⚠️ Issue: Humidity daily low hit 37.3°C (24h range 37.3–60.3%) — third consecutive day with afternoon lows below the 40% larval desiccation threshold despite a healthy daily avg; the wide diurnal swing reflects peak afternoon outdoor dryness.⚠️ Issue: Gas resistance at 210 kΩ is ~35% below the all-time avg of 321 kΩ — consistent with ongoing syrup processing from July 2nd feeding and active summer fanning; IAQ accuracy at 2 (calibrating) reduces confidence in IAQ 210; watch for normalization over next 48–72h.▹ Action: Monitor in-hive humidity afternoon lows — the 37.3% low today is the third consecutive day near or below the larval desiccation threshold; if lows consistently recur below 37%, 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.