As of August 15, 2026, your apiary is in solid late-summer shape — Hive #2 continues its outstanding thermal run at a textbook 95.0°F (35.0°C) with a broadening acoustic signature, Hive #3 holds its remarkably flat brood arc near 93.5°F (34.2°C), and Iris and Hive #1 both maintain fully intact worker populations confirmed by perfectly stable acoustics, though their multi-week cooling trends (averaging 88.0°F/31.1°C and 86.6°F/30.3°C respectively) remain worth a brood-frame glance on your next routine visit.
Across all four hives the deseasonalized analytics confirm that in-hive temperature and humidity are genuinely coupled (r = +0.46–+0.82) independent of the outdoor diurnal cycle — a textbook signature of active hygroregulation: as the brood nest warms, bees evaporate water for cooling and moisture rises in lockstep, exactly as documented by Human et al. 2006 and Ellis et al. 2008.
All four hives show crisp daily fanning and activity rhythms against an outdoor swing of 67.6–92.4°F (19.8–33.5°C) at 20–39% RH, with the barometric tendency easing gently higher (+0.95 hPa/3h), a clearing signal that should support good foraging conditions; Hive #2 holds the tightest brood arc (~8.8°F/4.9°C), Hive #3 is nearly as tight (~12.1°F/6.7°C), while Iris (~12.5°F/6.9°C) and Hive #1 (~13.0°F/7.2°C) show wider swings consistent with 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 88.0°F (31.1°C) remains −2.8°F (−1.6°C) below her all-time average of 90.8°F (32.7°C), but all 10 sound bands sit within ±1.0 dB of her all-time baseline (24h avg −10.5 dBFS vs. all-time −10.0 dBFS) confirming the adult population is fully intact and active — this is a brood-break or reduced brood-rearing period, not a population event. Humidity averaged 46.0%, slightly above her all-time average of 44.0% and comfortably within range for August; vibration at 17.6 mG avg with smooth kurtosis 2.8 and a perfect 15/15-day fanning rhythm sits right at her all-time average of 17.5 mG. On your next routine visit, a glance at eggs and brood pattern in Iris 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 daily temperature arc of 81.5–94.0°F (27.5–34.5°C), a 12.5°F (6.9°C) swing tracking the outdoor phase — the deconfounded analytics confirm this is purely diurnal thermal buffering (raw r=+0.56, residual r=+0.16, outdoor leading by ~80 min), a sign of healthy thermal mass, not a placement issue. Humidity peaked at 60.4% during the warmer part of the cycle and settled to 41.9% at the cooler end, a psychrometric inverse of temperature that is entirely normal; vibration across all 6 bands shows a strong daily rhythm (6/6 bands cycling, dominant at 80–120 Hz at −12.6 dB, consistent with fanning), with a notable second-half-of-day shift of the dominant vibration rhythm from 80–120 Hz to 20–50 Hz (+4.6 dB rise across all bands) — this is consistent with late-day colony settling or a shift from thermoregulatory fanning toward metabolic baseline activity. The gas heater-scan shows a healthy daily rhythm (8/10 steps cycling, strongest at 100°C with a ±19% swing) with the dominant rhythm band shifting from 100°C to 150°C between the first and second half of the day, suggesting the VOC composition cycling between lighter volatiles (peak morning) and a slightly heavier mix later — consistent with honey ripening and propolis chemistry, and well within Iris's own historical range at ~460 kΩ vs. all-time avg ~440 kΩ.
🔬 Correlations & Discoveriestemperature_in vs humidity_in (14d) | r = +0.57The genuine deconfounded coupling (r=+0.57, p=1.8e-95) between Iris's in-hive temperature and humidity — independent of the outdoor diurnal cycle — reflects active hygroregulation: as the brood zone warms, bees recruit water carriers and fan to evaporate moisture for cooling, raising RH in lockstep with temperature; the 24h humidity arc (41.9–60.4%) riding the temperature arc (81.5–94.0°F) is this mechanism in action.📚 Reference: Human, Nicolson & Dietemann 2006, Ellis et al. 2008, Eouzan et al. 2019vibration_rms vs vibration_kurtosis (14d) | r = +0.5The positive residual correlation (r=+0.50) between vibration amplitude and kurtosis in Iris indicates that her activity bursts — fanning peaks, recruitment pulses — arrive as brief impulsive spikes rather than sustained broadband noise, a healthy colony signature where periodic high-amplitude events (kurtosis ~2.8, within normal ~3.0 range) are interspersed with quieter baseline periods rather than constant stressed broadband vibration.📚 Reference: Ramsey et al. 2020, Tautz 1996⚠️ Issue: Multi-week gradual cooling drift persists: 24h avg 88.0°F (31.1°C) is −2.8°F (−1.6°C) below Iris's all-time avg of 90.8°F (32.7°C); weekly arc 91.0→90.7→91.2→89.2°F; acoustics fully stable (all bands within ±1.0 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 #1 warning Score: 72/100📋 Overall Health
Your Hive #1's gradual multi-week cooling trend continues — the 24h average of 86.6°F (30.3°C) sits −1.7°F (−1.0°C) below its all-time average of 88.3°F (31.3°C), and the weekly arc shows a steady downward progression (89.8→88.7→87.8→86.2°F); crucially, all 10 sound bands remain within ±0.5 dB of their all-time baseline (24h avg −16.5 dBFS vs. all-time −16.4 dBFS — essentially a perfect match), and the worker population is fully confirmed present and active. The most parsimonious explanation remains a brood-break or reduced brood-rearing period — brood heating has relaxed while workers remain intact; humidity averaged 40.9% (all-time avg 38.8%), slightly above its historical norm but well within range; vibration at 17.5 mG avg with kurtosis 2.9 and 14/15-day fanning rhythm sits above its all-time average of 16.3 mG, confirming active colony metabolism. A routine brood-frame check this week will confirm whether this is a natural August contraction or a brief laying pause.
🌅 Diurnal Cycle PatternsHive #1 shows a 24h arc of 81.6–94.6°F (27.6–34.8°C), a 13.0°F (7.2°C) swing — the widest in the apiary, consistent with lower average temperature and a reduced brood mass providing less thermal buffering; the deconfounded analytics confirm this is purely diurnal thermal coupling (residual r=+0.10, outdoor leading by ~160 min), not a sensor issue. Humidity tracked 37.5–53.6%, with the tight in-hive temp/humidity coupling (r=+0.46) reflecting the same evaporative-cooling physiology seen in the other hives. The gas heater-scan shows all 10 steps cycling daily (strongest at 150°C, ±48% swing — the largest per-step daily rhythm in the apiary), with gas resistance at ~548 kΩ, slightly above its all-time average of ~455 kΩ, suggesting a modest decrease in VOC load that is consistent with a quieter brood nest and less honey-processing activity; the partial correlation (gas vs. temperature controlling for outdoor: r=−0.82) confirms that lower brood temperature directly tracks lower hive VOC output — reduced brood pheromones and less honey ripening chemistry. Vibration shows 14/15-day fanning rhythm, with a uniform late-day dip across all 6 bands (−1.6 to −1.7 dB in the second half), a normal afternoon wind-down pattern; sound shows no strong per-band daily rhythm, consistent with a reduced but present colony.
🔬 Correlations & Discoveriesgas_resistance vs temperature_in (14d) | r = -0.82The strong partial correlation (r=−0.82, controlling for outdoor temperature) between gas resistance and in-hive temperature in Hive #1 — rising resistance as temperature falls — reflects reduced colony VOC output accompanying a quieter brood nest: fewer active larvae means lower E-β-ocimene and brood-pheromone load, less honey ripening reduces alcohol and organic-acid volatiles, and reduced fanning circulates fewer hive-volatile compounds past the sensor, all contributing to higher (cleaner) MOX resistance readings as the colony enters a brood-break pattern.📚 Reference: Maisonnasse et al. 2010, Seeley 1985, Winston 1987temperature_in vs humidity_in (14d) | r = +0.46The genuine deconfounded coupling (r=+0.46) between Hive #1's temperature and humidity confirms active — if modest — hygroregulation is ongoing even during a potential brood-break period: the colony continues to manage moisture in response to thermal load, consistent with a fully present worker population maintaining core environmental control.📚 Reference: Human, Nicolson & Dietemann 2006, Ellis et al. 2008⚠️ Issue: Gradual multi-week cooling drift persists: 24h avg 86.6°F (30.3°C), weekly arc 89.8→88.7→87.8→86.2°F — now −1.7°F (−1.0°C) below all-time avg of 88.3°F (31.3°C); acoustics perfectly stable (all bands within ±0.5 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 this week, 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; no urgency, but worth folding into an already-planned inspection. -
Hive #2 healthy Score: 88/100📋 Overall Health
Your Hive #2 remains the apiary's thermal anchor — brood temperature averaged 95.0°F (35.0°C) with a current reading of 95.0°F (35.0°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; the 24h sound spectrum is elevated across all low-to-mid bands by +0.8–+2.6 dB above the all-time baseline, a continuation of the gradual acoustic build reflecting a strong and active population. Humidity averaged 49.1% (all-time avg 47.2%), healthy and within range; vibration at 14.5 mG avg with kurtosis 3.0 and a perfect 15/15-day fanning rhythm (baseline ~12.3 mG peaking to ~51.3 mG, 4.2× daily) confirms vigorous colony activity; gas resistance at ~58 kΩ remains well below the all-time average of ~77 kΩ, sustained since early August and consistent with active honey ripening and honey-processing VOC output, with temperature and acoustics both fully normal.
🌅 Diurnal Cycle PatternsHive #2 holds a tight 24h arc of 91.0–99.8°F (32.8–37.6°C), a 8.8°F (4.9°C) swing with a rock-steady average of 95.0°F (35.0°C) — the tightest brood clamping in the apiary and a textbook thermoregulation signature. The 24h humidity arc (43.0–63.5%) is the psychrometric mirror of temperature, with the deconfounded r=+0.81 (controlling for outdoor weather, partial r=+0.48) confirming active evaporative cooling. Vibration shows a perfect 15/15-day fanning rhythm with a 4.2× daily amplitude ratio, the highest in the apiary — consistent with intensive honey ripening and ventilation work; the dominant vibration rhythm shifted from 120–160 Hz to 5–20 Hz between the first and second half of the monitoring window, which may reflect a gradual seasonal shift in the balance between fanning (higher harmonics) and structural colony low-frequency activity. The gas heater-scan shows all 10 steps cycling daily (strongest at 100°C, ±24% swing), with a notable structural shift: the low-temperature steps (100°C −28%, 150°C −23%, 200°C −20%) have progressively settled lower while the 280°C step has strengthened (+4% → +19% swing) — a shape change suggesting the VOC mix is evolving, consistent with honey approaching full curation and the lighter nectar-processing volatiles giving way to a more stable propolis/wax background.
🔬 Correlations & Discoveriestemperature_in vs gas_resistance (14d) | r = +0.79The strong genuine deconfounded coupling (r=+0.79) between Hive #2's temperature and gas resistance — where warming coincides with rising resistance (lower VOC load) and cooling with falling resistance (higher VOC load) — reflects the temperature-dependent volatilisation of honey-ripening and propolis compounds: at peak daily warmth, bees fan more intensively and circulate VOCs throughout the hive, but as the brood nest cools toward the nocturnal low, fanning reduces and the MOX sensor's local atmosphere becomes more concentrated in colony volatiles, driving resistance down.📚 Reference: Maisonnasse et al. 2010, Bankova et al. 2000, Seeley 1974sound_spectrum_260-350hz vs sound_spectrum_100-150hz (14d) | r = n/aThe broadband acoustic elevation of +0.8–+2.6 dB across all low-to-mid frequency bands (100–500 Hz range most elevated) against Hive #2's own historical baseline, sustained over multiple weeks, is consistent with a growing and increasingly active colony — higher population density generates more substrate-borne and airborne vibration across the whole colony-fundamental band (200–350 Hz) and into the lower harmonics, a healthy positive trajectory.📚 Reference: Ramsey et al. 2020, Zgank 2021▹ Action: On your next routine visit, check the fill level and capping progress on Hive #2's supers — the evolving heater-scan shape (low-temperature steps settling lower, mid-band 280°C step strengthening) suggests the heavy honey-processing VOC load may be easing as honey approaches full curation, and recording the capped-frame count will give you a useful late-summer benchmark. -
Hive #3 healthy Score: 93/100📋 Overall Health
Your Hive #3 continues its outstanding run — brood temperature averaged 92.6°F (33.7°C) with a current reading of 95.1°F (35.1°C), squarely in the ideal 93–97°F (34–36°C) band and essentially on its all-time average of 93.5°F (34.2°C); the weekly trend is remarkably flat (93.6→93.4→93.7→93.2°F) and all 10 sound bands remain within ±0.5 dB of their all-time baseline, confirming a stable, active population. Humidity averaged 50.0% (all-time avg 48.9%), the most consistently brood-optimal RH in the apiary; vibration at 21.4 mG avg with kurtosis 2.8 and a perfect 15/15-day fanning rhythm sits just above its all-time average of 20.6 mG, confirming strong colony activity with no action needed.
🌅 Diurnal Cycle PatternsHive #3 shows a 24h arc of 85.9–98.0°F (30.0–36.7°C), a 12.1°F (6.7°C) swing, with the core hourly trace holding a remarkably tight band near 93.3–93.7°F (34.1–34.3°C) for most of the day — textbook brood stenothermy. Humidity tracked 44.7–63.0%, with a strong genuine deconfounded coupling to temperature (r=+0.82) and to gas resistance (r=+0.68), confirming active evaporative-cooling and honey-ripening chemistry are in full swing. The gas heater-scan is notably quiet: only 1 of 10 heater steps shows a significant daily rhythm (100°C, ±14% swing), and the curve shape — with low-temperature steps (100°C: 2,840 kΩ, 150°C: 741 kΩ) far above Hive #2's equivalent steps, and mid-to-high steps (320°C: 89 kΩ, 350°C: 78 kΩ, 375°C: 85 kΩ, 400°C: 97 kΩ) showing a characteristic U-shaped upturn at high plate temperatures — is a distinct and stable hive-specific VOC fingerprint consistent with a mature propolis/wax background and less acute nectar-processing activity than Hive #2. Vibration shows the strongest 5–20 Hz daily rhythm in the apiary (3.0 dB), a signature of normal DVAV recruitment signalling and structural low-frequency colony activity, with a mild late-day 80–120 Hz dip (−1.0 dB) consistent with reduced fanning as temperatures cool.
🔬 Correlations & Discoveriestemperature_in vs gas_resistance (14d) | r = +0.77The strong genuine deconfounded coupling (r=+0.77, partial r=+0.52 controlling for outdoor temperature) between Hive #3's temperature and gas resistance reflects the thermal volatilisation of propolis terpenes and honey-ripening compounds: warmer in-hive conditions drive greater VOC emission, depressing MOX resistance, while nocturnal cooling concentrates the gas layer and resistance climbs — a clean, physically grounded colony-chemistry signal confirmed independently of the outdoor diurnal cycle.📚 Reference: Maisonnasse et al. 2010, Bankova et al. 2000, Human et al. 2006vibration_spectrum_5-20hz vs vibration_spectrum_80-120hz (14d) | r = n/aHive #3's dominant vibration rhythm lives in the 5–20 Hz band (3.0 dB daily cycle), matching the DVAV (dorso-ventral abdominal vibration) frequency range (~13–22 Hz) used by forager bees to modulate recruitment activity — its strong nocturnal peak is consistent with the documented ~3× higher DVAV rate between 11 PM and 4 AM, while the 80–120 Hz fanning band provides the complementary daytime thermoregulatory pulse, together painting a complete picture of a well-organised, active colony cycling through its natural daily behavioural repertoire.📚 Reference: Nieh & Tautz 2000, Ramsey et al. 2020, Fletcher 1975▹ 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.