As of August 16, 2026, your apiary is in solid late-summer form — Hive #2 remains the thermal anchor at a textbook 95.1°F (35.1°C) and Hive #3 holds its remarkably steady 93.5°F (34.2°C) average, while Iris and Hive #1 continue their multi-week gradual cooling trend (88.8°F/31.6°C and 86.4°F/30.2°C respectively) with fully intact, acoustically confirmed worker populations — a brood-break or reduced-laying period remains the most parsimonious explanation, and a glance at brood frames on your next routine visit will clarify.
All four hives show crisp daily fanning and activity rhythms against an outdoor swing of 67.6–86.8°F (19.8–30.4°C) at a very dry 18–39% RH, with the barometric tendency rising +1.38 hPa/3h — a clearing signal supporting good foraging conditions; Hive #2 holds the tightest brood arc (~1.6°F/0.9°C), Hive #3 next (~2.4°F/1.3°C), while Iris (~3.6°F/2.0°C) and Hive #1 (~5.0°F/2.8°C) show wider swings consistent with their lower average temperatures and reduced brood mass.
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Iris warning Score: 76/100📋 Overall Health
Your Iris hive continues her established pattern — the 24h average of 88.8°F (31.6°C) sits −1.9°F (−1.1°C) below her all-time average of 90.7°F (32.6°C), but all 10 sound bands remain within ±1.3 dB of her all-time baseline (24h avg −10.6 dBFS vs. all-time −10.1 dBFS), confirming the adult population is fully intact and active — a brood-break or reduced brood-rearing period, not a population event. Humidity averaged 42.8%, near her all-time average of 43.9% and acceptable for August in this dry climate; vibration at 17.2 mG avg with smooth kurtosis 2.5 and a perfect 15/15-day fanning rhythm sits right at her all-time average of 17.4 mG — no concerns there. On your next routine visit, a quick look at Iris's brood frames for fresh eggs and a solid laying pattern will confirm whether this gentle multi-week cooling reflects a natural August brood contraction or a brief laying pause.
🌅 Diurnal Cycle PatternsIris shows an active 24h temperature arc of 86.9–90.5°F (30.5–32.5°C), a swing of ~3.6°F (2.0°C) — well within healthy brood-clamping range; humidity held a notably flat 41.9–43.7% across the day, reflecting the dry ambient (outdoor 18–39% RH) ventilating through the hive, a normal summer ventilation pattern. Vibration peaks daily from a baseline ~16.6 mG to ~29.9 mG (1.8×), consistent with regular fanning activity; gas heater-scan shows the strongest daily rhythm at 100°C (+19% swing) with the dominant rhythm band shifting 100°C→150°C in the second half — this low-temperature-step modulation is humidity- and propolis-VOC sensitive and tracks the dry ambient cycle rather than signaling a chemical event. Per-band sound spectral rhythms show the dominant daily cycle shifting 100–150Hz→200–260Hz, worth noting as a mild evolution in the foraging/communication acoustic pattern but within Iris's own normal variation.
🔬 Correlations & Discoveriestemperature_in vs humidity_in (14d) | r = +0.45The genuine deconfounded r=+0.45 between in-hive temperature and humidity in Iris reflects the thermodynamic coupling of moisture regulation in a partially broodless colony — when brood heating is reduced, the thermal microclimate relaxes slightly and the colony's water-vapor management becomes more loosely coupled to ambient, producing a mild co-movement of both channels that is a biological signature of reduced brood mass, not a ventilation defect.📚 Reference: Eouzan et al. 2019 (PMC6368279), Human et al. 2006, Ellis et al. 2010humidity_in vs gas_resistance (14d) | r = +0.42The r=+0.42 between in-hive humidity and gas resistance (after removing the shared diurnal cycle) reflects MOX sensor physics: higher ambient water vapor at the sensing plate raises resistance independently of VOC load — so the mild humidity swings in this dry-climate hive are partially responsible for the gas-resistance variation, a measurement artifact rather than a meaningful chemical signal.📚 Reference: Burgues & Marco 2018, Maisonnasse et al. 2010, Human et al. 2006⚠️ Issue: Multi-week gradual cooling drift continues: 24h avg 88.8°F (31.6°C) is −1.9°F (−1.1°C) below Iris's all-time avg of 90.7°F (32.6°C); weekly arc 90.9→90.7→91.2→88.9°F — acoustics fully stable (all bands within ±1.3 dB of baseline) confirming intact population, consistent with a brood-break or reduced brood-rearing period.▹ 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: 89/100📋 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 95.1°F (35.1°C) and squarely in the ideal 93–97°F (34–36°C) band, with a remarkably tight 24h arc of only 94.1–95.7°F (34.5–35.4°C). Sound spectrum is elevated across all bands by +0.5–+1.8 dB above baseline (24h avg −7.8 dBFS vs. all-time −8.7 dBFS), reflecting a strong, active population; humidity averaged 45.9% (all-time avg 47.2%), comfortably in range, and vibration at 14.6 mG avg with kurtosis 3.4 and a 15/15-day fanning rhythm confirms vigorous colony metabolism. Gas resistance at ~56 kΩ (all-time avg ~74 kΩ) remains below its historical baseline, sustained since early August and consistent with ongoing honey-ripening VOC activity — with temperature and acoustics both fully normal, this is a healthy, hardworking hive.
🌅 Diurnal Cycle PatternsHive #2 holds the tightest brood arc in the apiary at 94.1–95.7°F (34.5–35.4°C), a swing of just 1.6°F (0.9°C) — textbook stenothermy; humidity ranged 43.0–48.0%, a modest 5% daily swing driven by fanning activity and nectar processing. Vibration peaks spectacularly from a baseline ~12.3 mG to ~51.0 mG daily (4.1×), the largest daily fanning multiplier in the apiary, indicative of intense honey-ripening ventilation; the dominant vibration rhythm band shifted 50–80Hz→5–20Hz in the second half, a subtle shift in the substrate-borne fanning signature worth watching but within normal seasonal variation. The gas heater-scan shows a strong daily rhythm at 100°C (+30% swing) with band energy declining at the low-temperature steps (100°C −27%, 150°C −22%, 200°C −20%), suggesting the heavy-duty processing VOC load characteristic of peak honey ripening is gradually easing — consistent with honey approaching full curation.
🔬 Correlations & Discoveriestemperature_in vs gas_resistance (14d) | r = +0.8The strong deconfounded r=+0.80 between in-hive temperature and gas resistance in Hive #2 reflects a genuine metabolic coupling: when the colony heats the brood nest more intensely (supporting peak brood and honey-ripening activity), fanning increases and circulates more propolis terpenes, brood pheromones, and honey-evaporation volatiles — all of which lower MOX resistance — producing a co-movement of temperature and VOC load that is a signature of a highly active, productive colony.📚 Reference: Seeley 1974, Stalidzans et al. 2017, Human et al. 2006temperature_in vs humidity_in (14d) | r = +0.79The r=+0.79 in-hive temperature–humidity coupling (after deseasonalization, controlling for outdoor weather at r=+0.49 partial) indicates that Hive #2's water-vapor management is tightly integrated with its brood thermoregulation — as the colony heats up for peak brood and honey ripening, evaporative cooling and nectar-drying fanning raise humidity in tandem, a physiologically coherent signature of a colony operating at high metabolic capacity.📚 Reference: Eouzan et al. 2019 (PMC6368279), Ellis et al. 2008, Stabentheiner et al. 2010▹ Action: On your next routine visit, note the fill level and capping progress on Hive #2's supers — the gradual easing of the low-temperature heater-scan steps suggests the honey-processing VOC load may be 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 86.4°F (30.2°C) sits −1.8°F (−1.0°C) below its all-time average of 88.2°F (31.2°C), and the weekly arc shows a steady downward progression (89.6→88.7→87.8→86.5°F); crucially, all 10 sound bands remain within ±0.2 dB of their all-time baseline (24h avg −16.3 dBFS vs. all-time −16.4 dBFS — essentially a perfect match), confirming the worker population is fully present and active. The most parsimonious explanation remains a brood-break or reduced brood-rearing period; humidity averaged 38.2% (all-time avg 38.8%), essentially on its historical norm and unsurprising given this apiary's very dry ambient; vibration at 16.1 mG avg with kurtosis 3.0 and 14/15-day fanning rhythm confirms active colony metabolism. 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 a 24h temperature arc of 83.8–88.8°F (28.8–31.5°C), a swing of ~5.0°F (2.8°C) — the widest in the apiary but still within healthy brood-clamping range, consistent with a lower average temperature and reduced brood mass; humidity held an extremely flat 37.5–39.4%, essentially inert across the day, reflecting dry ambient ventilation. Vibration peaks from a baseline ~15.9 mG to ~23.3 mG (1.5×) daily — the most modest daily fanning multiplier in the apiary, aligned with lower thermal regulation demand; no strong per-band daily sound rhythm (max 1.0 dB at 600–800Hz) is characteristic of a quieter colony in a brood-reduced state. The gas heater-scan shows the strongest daily rhythm at 150°C (+48% swing) across all 10 bands — the large mid-temperature-step modulation in this dry, low-VOC hive is dominated by humidity and thermal cycling of the sensing plate rather than a VOC event, and is consistent with Hive #1's historically high gas resistance.
🔬 Correlations & Discoveriesgas_resistance vs temperature_in (14d) | r = -0.82The partial correlation of r=−0.82 between gas resistance and in-hive temperature (controlling for outdoor temperature) in Hive #1 reveals a hive-specific inverse coupling: as the colony reduces brood heating, fanning slows and VOC circulation decreases, allowing gas resistance to rise — so the cooling drift and the gently rising gas resistance are two faces of the same brood-resting state, not independent anomalies.📚 Reference: Seeley 1985, Winston 1987, Human et al. 2006⚠️ Issue: Gradual multi-week cooling drift persists: 24h avg 86.4°F (30.2°C), weekly arc 89.6→88.7→87.8→86.5°F — now −1.8°F (−1.0°C) below all-time avg of 88.2°F (31.2°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 reduced brood-rearing period.▹ Action: On your next routine visit, check the brood frames in Hive #1 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 93.5°F (34.2°C) with a current reading of 93.7°F (34.3°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 is remarkably flat (93.6→93.4→93.7→92.8°F) and all 10 sound bands remain within ±0.1 dB of their all-time baseline, confirming a stable, active population. Humidity averaged 48.3% (all-time avg 48.8%), the most consistently brood-optimal RH in the apiary; vibration at 20.9 mG avg with kurtosis 3.0 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 summer.
🌅 Diurnal Cycle PatternsHive #3 holds a 24h temperature arc of 92.7–95.1°F (33.7–35.1°C), a swing of just 2.4°F (1.3°C) — the second-tightest in the apiary, excellent brood clamping; humidity held 46.8–48.9%, a narrow 2.1% daily range consistent with active hygroregulation. Vibration peaks from a baseline ~19.6 mG to ~34.6 mG daily (1.8×), a healthy fanning rhythm; the dominant vibration rhythm lives in the 5–20Hz band (3.0 dB daily swing) with only 4/6 vibration bands showing a cycle — a stable, well-organized metabolic signature. The gas heater-scan shows only 1/10 bands with a significant daily rhythm (100°C, +14% swing), the flattest gas-cycle profile in the apiary, indicating a stable, well-ventilated VOC environment consistent with Hive #3's elevated all-time gas resistance baseline; the strong genuine deconfounded coupling of temperature, humidity, and gas resistance (r=+0.76, +0.70, +0.60) reflects an integrated, healthy metabolic system.
🔬 Correlations & Discoveriestemperature_in vs gas_resistance vs humidity_in (14d) | r = +0.76The three-way genuine coupling of in-hive temperature, humidity, and gas resistance in Hive #3 (r=+0.76, +0.70, +0.60 pairwise after deseasonalization, with the colony-state PCA index rising) is a textbook signature of an integrated, metabolically coherent colony: brood heating, moisture regulation, and VOC production from brood pheromones and honey ripening all rise and fall together as the colony's activity level varies — a healthy colony operating as a single superorganism (Seeley 1974; Stabentheiner et al. 2010).📚 Reference: Seeley 1974, Maisonnasse et al. 2010, Stalidzans et al. 2017, Human et al. 2006▹ 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.