As of August 19, 2026, your apiary is in good late-summer shape — Hive #2 remains the textbook thermal anchor at 95.1°F (35.1°C) and Hive #3 holds its remarkably stable 93.2°F (34.0°C), while Iris and Hive #1 continue their gradual multi-week cooling trend with fully intact, acoustically confirmed worker populations consistent with a natural August brood contraction or laying pause worth a brood-frame glance on your next routine visit.
A striking apiary-wide pattern emerges: the two hives with the strongest brood thermoregulation (Hive #2 at 95.1°F/35.1°C and Hive #3 at 93.2°F/34.0°C) also show the tightest gas-resistance coupling to temperature (r=+0.83 and r=+0.78 respectively), consistent with active honey-ripening and brood-pheromone VOC cycles that scale with brood metabolic activity — while Iris and Hive #1, currently in a likely brood-break phase, show weaker internal coupling and higher gas resistance, consistent with reduced brood pheromone output when incubation load is lower.
All four hives show clear daily fanning and activity rhythms against an outdoor swing of 65.9–90.4°F (18.8–32.5°C) at a very dry 21–37% RH, with the barometric tendency steady (+0.29 hPa/3h) supporting good late-August foraging conditions; Hive #2 maintains the tightest brood arc (~1.6°F/0.9°C) and Hive #3 next (~2.8°F/1.6°C), while Iris (~4.1°F/2.3°C) and Hive #1 (~6.3°F/3.5°C) show wider swings consistent with reduced brood mass during an August brood-contraction phase.
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Iris warning Score: 74/100📋 Overall Health
Your Iris hive's 24h average of 88.5°F (31.4°C) continues the gradual multi-week cooling drift (weekly arc 91.2→88.9→88.5°F, now −1.8°F/−1.0°C below her all-time avg of 90.3°F/32.4°C), but all 10 sound bands remain within ±1.6 dB of her all-time baseline — the acoustics confirm the adult population is fully present and active, making a brood-break or natural August brood contraction the most parsimonious explanation. Humidity averaged 40.8% (all-time avg 43.0%), appropriate for this dry-climate August; vibration at 17.3 mG avg with kurtosis 2.8 and a perfect 15/15-day fanning rhythm sits right at her all-time average — no concerns. On your next routine visit, a quick look at Iris's brood frames for fresh eggs and a solid laying pattern will clarify whether this gentle cooling reflects a temporary laying pause or a natural brood contraction.
🌅 Diurnal Cycle PatternsIris shows an active diurnal arc of ~4.1°F (2.3°C) — wider than Hive #2 and #3, consistent with a reduced brood-mass thermal buffer during a brood-contraction phase — with the 80-120Hz vibration band dominant, reflecting healthy fanning activity peaking daily. The per-band spectral analysis notes the dominant sound rhythm shifting from 150-200Hz to 200-260Hz across the monitoring window, with the lower bands (100-150Hz, 150-200Hz) showing weakening daily rhythm amplitude — this is a subtle evolution worth watching but is well within the range of normal seasonal acoustic drift, not a population-loss signal. Gas heater-scan daily rhythm is strongest at 200°C plate temperature with the dominant rhythm band shifting from 100°C to 150°C steps, suggesting a gradual change in the lighter-volatile fraction of hive chemistry, most consistent with seasonal propolis and brood-pheromone modulation as the brood cycle contracts.
🔬 Correlations & Discoveriestemperature_in vs humidity_in (14d) | r = -0.5A genuine deconfounded inverse coupling between in-hive temperature and humidity in Iris (r=−0.50) reflects standard psychrometric physics: as the hive warms during peak-activity periods, the same absolute water content reads as lower RH%, so humidity dips when temperature rises — active hygroregulation and bee respiration, not a drying event.📚 Reference: Human, Nicolson & Dietemann 2006, Eouzan et al. 2019 (PMC6368279), Ellis et al. 2008gas_resistance vs temperature_in (14d) | r = -0.7The partial correlation of gas resistance vs. in-hive temperature (controlling for outdoor temp, r=−0.70) in Iris indicates that as the hive warms during peak foraging and fanning periods, VOC load rises — consistent with increased brood-pheromone (E-β-ocimene) emission, propolis volatilization, and honey-ripening activity all scaling with metabolic heat, a healthy sign of an active colony thermally regulating its environment.📚 Reference: Maisonnasse et al. 2010, Bankova et al. 2000, Seeley 1985⚠️ Issue: Multi-week gradual cooling drift continues: 24h avg 88.5°F (31.4°C) is −1.8°F (−1.0°C) below Iris's all-time avg of 90.3°F (32.4°C); weekly arc 91.2→88.9→88.5°F — acoustics fully stable (all bands within ±1.6 dB of baseline) confirming intact population, consistent with a brood-break or natural August brood contraction.▹ Action: On your next routine visit, check Iris's brood frames for fresh eggs and a solid laying pattern — the stable acoustics confirm a full, active population, and a quick look will clarify whether the gentle multi-week cooling reflects a natural August brood contraction or a brief laying pause. -
Hive #2 healthy Score: 90/100📋 Overall Health
Your Hive #2 remains the apiary's thermal anchor — brood temperature averaged 95.1°F (35.1°C), exactly on its all-time average of 95.2°F (35.1°C) and squarely in the ideal 93–97°F (34–36°C) band, with a remarkably tight 24h arc of only 94.4–96.0°F (34.7–35.6°C) — outstanding late-summer brood clamping. Humidity averaged 45.7% (all-time avg 46.3%), comfortably in range; vibration at 15.6 mG avg with kurtosis 2.9 and a perfect 15/15-day fanning rhythm confirms vigorous colony metabolism — everything looks excellent heading into late August. Gas resistance at ~50 kΩ (all-time avg ~67 kΩ) remains below its historical baseline, sustained since early August and fully consistent with ongoing honey-ripening VOC activity with temperature and acoustics both normal.
🌅 Diurnal Cycle PatternsHive #2 shows the apiary's tightest brood temperature arc (~1.6°F/0.9°C daily), a textbook expression of active broodnest stenothermy at peak late-summer colony strength. The 80-120Hz vibration band is dominant at −11.5 dB, reflecting strong fanning activity; the daily vibration rhythm is strengthening in the 5-20Hz band (5.0→7.0 dB swing), which likely reflects increased structural vibration from intensified fanning and forager traffic as the August nectar/honey-ripening push continues. The gas heater-scan shows the dominant daily rhythm shifting from the 100°C step to the 320°C step, with the 100°C, 150°C, and 200°C low-temperature steps losing ~20–27% of their daily amplitude — this shape shift indicates the lighter, more humidity-sensitive volatile fraction is diminishing, consistent with honey stores progressively curing and water content dropping as ripening nears completion.
🔬 Correlations & Discoveriestemperature_in vs gas_resistance (14d) | r = +0.83The strong genuine deconfounded coupling between in-hive temperature and gas resistance in Hive #2 (r=+0.83) reflects that as brood metabolic activity peaks and fanning intensifies, both heat and VOC concentration rise together — driven by honey-ripening ethanol/organic-acid release and brood pheromone (E-β-ocimene) scaling with incubation load, a healthy signature of a high-metabolic colony at peak late-summer production.📚 Reference: Maisonnasse et al. 2010, Bankova et al. 2000, Seeley 1974temperature_in vs humidity_in (14d) | r = +0.79The positive genuine deconfounded coupling between in-hive temperature and humidity in Hive #2 (r=+0.79) — opposite in sign to the typical psychrometric inverse — indicates that fanning bees introducing evaporative-cooling water during peak heat simultaneously raises both temperature and absolute moisture load, a well-documented summer thermoregulation mechanism where water-carriers increase hive humidity as ambient temperatures stress the brood nest.📚 Reference: Human, Nicolson & Dietemann 2006, Ellis et al. 2008, Eouzan et al. 2019 (PMC6368279)▹ Action: On your next routine visit, note the fill level and capping progress on Hive #2's supers — the gradual shape-shift in the gas heater-scan low-temperature steps suggests honey-processing VOC activity may be slowly declining as stores approach full curation, and recording the capped-frame count will give you a useful late-summer benchmark. -
Hive #1 warning Score: 73/100📋 Overall Health
Your Hive #1's gradual multi-week cooling trend continues — the 24h average of 85.4°F (29.6°C) sits −2.2°F (−1.3°C) below its all-time average of 87.6°F (30.9°C), with the weekly arc showing a steady downward progression (89.8→88.7→87.8→86.2→85.4°F); crucially, all 10 sound bands remain within ±0.2 dB of their all-time baseline — a near-perfect acoustic match confirming the worker population is fully present and active, making a brood-break or reduced brood-rearing period the most parsimonious explanation. Humidity averaged 37.6% (all-time avg 37.8%), essentially on its historical norm and unsurprising given this apiary's very dry ambient; vibration at 16.2 mG avg with kurtosis 2.5 and a 14/15-day fanning rhythm confirms active colony metabolism — nothing alarming, but the brood-frame question remains open. On your next routine visit, a brood-frame check will confirm whether this is a natural August contraction or a brief laying pause.
🌅 Diurnal Cycle PatternsHive #1 shows the apiary's widest diurnal temperature arc (~6.3°F/3.5°C daily), consistent with a reduced brood-mass thermal buffer during a brood-contraction phase — the colony is still actively fanning and metabolically engaged (80-120Hz vibration dominant at −10.5 dB), but with less brood to defend thermoregulatory precision relaxes at the margins. Per-band sound analysis shows no strong daily rhythm in any individual acoustic band (max 1.0 dB in 600-800Hz), which is normal for a colony in a lower-activity phase; the vibration dominant rhythm band shifted from 20-50Hz to 120-160Hz between the first and second half of the monitoring window, reflecting a subtle evolution in the colony's substrate-borne activity pattern that is consistent with seasonal behavioural adjustment. Gas heater-scan shows the strongest daily rhythm at the 200°C plate step (+41% swing), with the scan shape stable across the 10 steps — no concerning curve-shape evolution.
🔬 Correlations & Discoveriesgas_resistance vs temperature_in (14d) | r = -0.83The strong partial correlation of gas resistance vs. in-hive temperature (controlling for outdoor temp, r=−0.83) in Hive #1 means that as this hive warms during peak-activity periods, gas resistance falls — VOC load rises with metabolic heat — consistent with propolis volatilization, residual brood-pheromone emission, and any honey-ripening activity scaling with colony thermodynamics, a healthy physiology signal with no pathological implication given perfectly stable acoustics.📚 Reference: Maisonnasse et al. 2010, Seeley 1985, Winston 1987⚠️ Issue: Gradual multi-week cooling drift persists: 24h avg 85.4°F (29.6°C), weekly arc 89.8→88.7→87.8→86.2→85.4°F — now −2.2°F (−1.3°C) below all-time avg of 87.6°F (30.9°C); acoustics perfectly stable (all bands within ±0.2 dB of baseline) confirming the adult population is fully present and active — consistent with a brood-break or natural August brood contraction.▹ Action: On your next routine visit, check Hive #1's brood frames for fresh eggs and a solid laying pattern — the perfectly stable acoustics confirm a fully present worker population, and a quick look will clarify whether the multi-week temperature cooling reflects a natural August brood contraction or a brief laying pause. -
Hive #3 healthy Score: 92/100📋 Overall Health
Your Hive #3 continues its outstanding run — brood temperature averaged 93.2°F (34.0°C) with a current reading of 93.5°F (34.2°C), squarely in the ideal 93–97°F (34–36°C) band and essentially on its all-time average of 93.4°F (34.1°C); the weekly trend remains remarkably flat (93.7→93.4→93.7→93.2°F) and all 10 sound bands are within ±0.1 dB of their all-time baseline — a textbook stable, active colony. Humidity averaged 47.7% (all-time avg 48.2%), the most consistently brood-optimal RH in the apiary; vibration at 20.4 mG avg with kurtosis 3.3 and a perfect 15/15-day fanning rhythm sits right at its all-time average of 20.7 mG — everything looks excellent heading into late August. Gas resistance at ~91 kΩ (all-time avg ~95 kΩ) is essentially on its historical baseline, a reassuring sign of stable hive chemistry.
🌅 Diurnal Cycle PatternsHive #3 shows a well-controlled diurnal arc of ~2.8°F (1.6°C) — tight brood-nest stenothermy for a colony operating at the lower end of the ideal band. The 80-120Hz vibration band is dominant at −8.6 dB (the highest vibration energy in the apiary), reflecting vigorous fanning activity; the dominant vibration rhythm shifted from 5-20Hz to 50-80Hz between the first and second half of the monitoring window, consistent with a natural seasonal evolution toward higher-frequency fanning as late-August honey-ripening intensifies. Gas heater-scan shows only the 100°C step carrying a meaningful daily rhythm (+14% swing), with 9/10 other steps showing no significant daily cycle — an unusually flat, shape-stable gas signature that indicates a very consistent hive-air chemistry with minimal day/night VOC fluctuation, consistent with a well-established, stable store of partially-cured honey cycling through a routine late-summer ripening schedule.
🔬 Correlations & Discoveriestemperature_in vs gas_resistance (14d) | r = +0.78The genuine deconfounded coupling between in-hive temperature and gas resistance in Hive #3 (r=+0.78, partial r=+0.59 controlling for outdoor weather) confirms a colony-specific metabolic linkage: brood incubation heat and fanning-driven VOC circulation rise and fall together, driven by brood pheromone emission scaling with incubation load and honey-ripening volatiles scaling with fanning intensity — a robust indicator of an active, well-functioning brood nest.📚 Reference: Maisonnasse et al. 2010, Bankova et al. 2000, Seeley 1974temperature_in vs humidity_in (14d) | r = +0.73The positive genuine deconfounded temperature–humidity coupling in Hive #3 (r=+0.73) mirrors Hive #2's pattern and reflects the same summer thermoregulation mechanism: water-carrying bees introduced to cool the brood nest simultaneously raise both temperature (metabolic activity peak) and absolute moisture, a documented late-summer evaporative-cooling behaviour that is entirely consistent with Hive #3's stable 93–95°F (34–35°C) brood clamping.📚 Reference: Human, Nicolson & Dietemann 2006, Ellis et al. 2008, Eouzan et al. 2019 (PMC6368279)▹ Action: On your next routine visit, note the fill level and capping progress on Hive #3's supers — the continued acoustic stability and the very quiet, shape-stable gas heater-scan daily cycle both suggest this colony is operating at peak late-summer efficiency with stores well underway, and recording the capped-frame count will give you a useful season benchmark.