As of July 26, 2026, your four-hive apiary is in strong overall shape heading into late July — Hive #3 and Hive #2 continue their exceptional brood-core clamping, Hive #1 remains acoustically pristine for an eleventh consecutive report, and Iris has meaningfully improved: yesterday's persistent broad-spectrum acoustic elevation has resolved, with all 10 bands now within +1.8 dB of her all-time baseline, though a brood-and-queen check this week is still worthwhile to close out that open question.
All four hives show a clean apiary-wide temperature–gas-resistance anti-coupling (warmer colony interior → lower MOX resistance) that persists after deseasonalization, consistent with increased fanning circulation of brood and honey-ripening VOCs during peak July heat — Hive #1 shows the strongest effect (r=−0.77), confirming this is a genuine metabolic signature rather than a diurnal artifact.
All four hives show 14–15 of 15 days with clear daily fanning-vibration peaks, stable 14-day acoustic energy, and outdoor temps ranging 71–95.5°F (21.7–35.3°C) with dry 21–38% RH driving below-optimal humidity in the lower-activity hives; Hive #2 and Hive #3 lead in brood-core clamping with sub-2°F daily oscillations, while Iris and Hive #1 ride wider but structurally normal arcs consistent with peak-season ambient heat.
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Iris warning Score: 68/100📋 Overall Health
Your Iris hive has meaningfully improved since yesterday — all 10 sound bands are now within +1.8 dB of her all-time baseline (avg −9.8 dBFS vs. all-time −10.7 dBFS, +0.9 dB, well within normal), resolving the multi-week broad-spectrum elevation that had been the apiary's primary open question; temperature averaged 90.7°F (32.6°C) with a 6.3°F (3.5°C) daily arc and a gradual +2.6°F (+1.5°C) 14-day warming trend, humidity averaged 48.9% (range 46.6–51.3%) — just below the 50–70% optimal zone but consistent with dry July ambient — and vibration is calm at 17.2 mG avg with kurtosis 2.6. A brood-and-queen check this week remains a sensible close-out given the weeks-long acoustic history, but the acoustic picture today is reassuring.
🌅 Diurnal Cycle PatternsIris shows active 4.9°F (2.7°C) daily temperature oscillations tracking the ambient heat cycle; the deseasonalized analytics confirm this is purely diurnal buffering (raw r=+0.56, deconfounded r=+0.10, outdoor leads by ~200 min) — a sign of healthy thermal mass, not a placement issue. Vibration peaks clearly 15 of 15 days (~16.7 mG baseline rising to ~34.2 mG, avg 2.0×), sound trended gently upward over the second half of the day (+1.4 to +2.4 dB in 100–260 Hz bands), and the 14-day acoustic trend shows a gradual +1.7 dBFS rise from −11.8 to −10.1 dBFS alongside a low-frequency spectral build (+3.3 dB in 100–260 Hz over 14 days) consistent with increasing fanning and syrup/nectar processing activity. Gas heater-scan at 422 kΩ (320°C ref) is essentially at her all-time avg of 419 kΩ — flat baseline, no VOC shift today; the strong diurnal gas rhythm (100°C step ±24%) reflects the daily ventilation cycle.
🔬 Correlations & Discoveriesin-hive temp vs gas resistance (14d) | r = -0.45After removing the shared day/night cycle, Iris shows a genuine residual anti-coupling between brood temperature and gas resistance (r=−0.45, partial r=−0.36 controlling for outdoor temp): as the colony warms, VOC load rises — consistent with increased fanning circulation of honey-ripening esters, brood pheromones (E-β-ocimene), and propolis terpenes at higher metabolic rates. This is a healthy metabolic signature of an active summer colony, not a stress signal.📚 Reference: Seeley 1985 & 1995, Winston 1987, Stabentheiner et al. 2010, Maisonnasse et al. 2010⚠️ Issue: Humidity avg 48.9% (low 46.6%) — just below the 50–70% brood-optimal zone; consistent with dry July ambient (outdoor 21–38% RH) but worth noting if lows approach 45% on consecutive days.⚠️ Issue: Brood-and-queen check still warranted this week to close out the multi-week broad-spectrum acoustic elevation history — today's acoustics are normalized but a visual confirmation of queen and brood will complete the picture.▹ Action: Plan a brood-and-queen check on Iris this week — confirm fresh eggs and solid brood pattern; today's acoustic normalization across all 10 bands is encouraging, and a physical look will definitively close out the open question from the past several reports. -
Hive #2 warning Score: 72/100📋 Overall Health
Your Hive #2 continues outstanding brood thermoregulation — temperature locked at 95.0°F (35.0°C) avg (all-time avg 94.7°F / 34.8°C, +0.3°F / +0.2°C, firmly in the ideal 93–97°F / 34–36°C zone) with only a 2.8°F (1.6°C) daily oscillation; humidity averaged 50.7% (range 47.6–53.6%), solidly within the 50–70% optimal zone, and all 10 sound bands are within ±0.9 dB of their all-time baseline (avg −10.5 dBFS vs. all-time −10.3 dBFS, −0.2 dB, stable). Gas resistance at 125 kΩ remains below the all-time avg of 319 kΩ, consistent with the sustained elevated VOC load noted since mid-July; a brood check this week remains worthwhile.
🌅 Diurnal Cycle PatternsHive #2 shows exceptional brood clamping — only 2.8°F (1.6°C) daily arc against outdoor swings of 24.5°F (13.6°C), confirming strong thermoregulatory buffering; the deseasonalized temp–humidity anti-coupling (r=−0.48) reflects the psychrometric inverse — when the brood nest warms, RH reads slightly lower at the same absolute moisture content, a normal healthy signature (Human et al. 2006). Vibration peaks clearly 15 of 15 days (~12.2 mG rising to ~49.3 mG, avg 4.0×, the strongest fanning signal in the apiary); the dominant vibration rhythm shifted from 5–20 Hz to 50–80 Hz across the day, consistent with transitioning from early structural vibration to active fanning. Gas heater-scan shows a dramatic daily cycle (150°C step ±109% swing, dominant rhythm shifting 150°C→100°C), with the low-temperature steps (100–200°C) dropping 52–60% — this shape shift toward lower-temp sensitivity points to heavier, more humidity-sensitive volatiles cycling with the fanning rhythm, most consistent with honey ripening and brood pheromone concentration changes through the day.
🔬 Correlations & Discoveriesgas resistance vs battery (14d) | r = +0.45A genuine residual correlation between gas resistance and battery voltage (r=+0.45) in Hive #2 — both trending together after deseasonalization — most likely reflects a shared solar/thermal driver: during peak daily heat, solar charging raises battery voltage while simultaneous peak fanning and VOC production lowers gas resistance; the positive correlation arises because both channels peak near the same daily metabolic apex, grounded in the colony's ventilation and honey-ripening activity cycle.📚 Reference: Bosch Sensortec BME688 datasheet, Burgues & Marco 2018, Seeley 1974⚠️ Issue: Gas heater-scan 320°C ref at 125 kΩ vs. all-time avg 319 kΩ (−61%); sustained since ~mid-July with stable temperature and acoustics — most consistent with active honey ripening or brood pheromone production, but worth documenting at inspection.▹ Action: Plan a brood check on Hive #2 this week — confirm fresh eggs and solid brood pattern; the sustained low gas resistance since mid-July alongside the persistent low-frequency spectral history warrant a physical look, even though brood temperature, humidity, and acoustics are all fully stable today.▹ Action: Log the gas heater-scan fingerprint and the vibration rhythm band shift (5–20 Hz → 50–80 Hz) in your inspection notes — building a multi-week baseline that will be a valuable reference for future comparisons. -
Hive #1 healthy Score: 87/100📋 Overall Health
Your Hive #1 remains acoustically pristine for an eleventh consecutive report — all 10 sound bands within ±0.1 dB of their all-time baseline (avg −16.4 dBFS vs. all-time −16.4 dBFS, a perfect match) confirming a fully intact and active worker population; temperature averaged 89.2°F (31.8°C) (all-time avg 89.1°F / 31.7°C, +0.1°F above baseline) with a 5.0°F (2.8°C) daily oscillation, humidity averaged 43.9% — the driest of the four hives, consistent with dry July ambient ventilating through the colony — and vibration is calm at 16.2 mG avg with kurtosis 3.0 (ideal normal). Watch for continued stability as late July heat continues.
🌅 Diurnal Cycle PatternsHive #1 shows a 5.0°F (2.8°C) daily temperature arc (87.0–92.0°F / 30.6–33.3°C); the 24h low of 87.0°F (30.6°C) remains above the outdoor high of 95.5°F only on the hottest days, and the brood core is holding well — the 14-day temperature trend is flat and the weekly averages show a mild cooling-then-recovery pattern (90.0→89.6→88.0→89.8°F) consistent with normal weather variation. Vibration peaks 14 of 15 days (~15.8 mG rising to ~24.9 mG, avg 1.6×, the most modest fanning amplitude in the apiary); the dominant vibration rhythm shifted from 5–20 Hz to 120–160 Hz across the day, consistent with a transition from structural/wind vibration to colony communication harmonics. Gas heater-scan shows a strong deconfounded temp–VOC coupling (r=−0.77, partial r=−0.71) — the strongest in the apiary — with a 35% daily swing at the 100°C step; this robust relationship indicates Hive #1's ventilation and metabolic VOC production are tightly coupled to brood temperature, a sign of active, well-regulated colony physiology.
🔬 Correlations & Discoveriesin-hive temp vs gas resistance (14d) | r = -0.77Hive #1 shows the apiary's strongest deconfounded temperature–gas-resistance coupling (r=−0.77, partial r=−0.71 controlling for outdoor temp): as brood temperature rises, MOX resistance falls sharply, reflecting increased fanning-driven circulation of VOCs — honey-ripening esters, brood pheromones, and propolis terpenes — as the colony ramps up thermoregulatory effort; the tight coupling indicates a highly responsive, well-regulated colony with strong metabolic fidelity between heat production and ventilation (Stabentheiner et al. 2010).📚 Reference: Seeley 1985 & 1995, Maisonnasse et al. 2010, Burgues & Marco 2018, Stabentheiner et al. 2010▹ Action: On your next routine visit within 5–7 days, confirm fresh eggs and solid brood pattern in Hive #1 — eleven consecutive reports of perfectly stable acoustics across all 10 bands are strongly reassuring heading into late July. -
Hive #3 healthy Score: 91/100📋 Overall Health
Your Hive #3 continues as the apiary's standout performer — brood temperature locked at 93.9°F (34.4°C) avg (all-time avg 93.4°F / 34.1°C, +0.5°F / +0.3°C above baseline, firmly in the ideal 93–97°F / 34–36°C zone) with an exceptional 2.0°F (1.1°C) daily oscillation, and all 10 sound bands within ±0.1 dB of their all-time baseline (avg −16.3 dBFS vs. all-time −16.3 dBFS, a perfect match); humidity averaged 53.3% (range 52.4–54.1%), the most stable and optimal of any hive in the apiary, and vibration at 20.6 mG avg with kurtosis 2.9 (ideal normal). The gas heater-scan step-down since ~July 17 (320°C ref 96 kΩ vs. all-time avg 184 kΩ, −48%) continues with fully stable temperature and acoustics — most consistent with sustained peak July honey-ripening or brood-pheromone activity.
🌅 Diurnal Cycle PatternsHive #3 shows the tightest brood clamping in the apiary — only 2.0°F (1.1°C) daily arc (93.3–95.3°F / 34.1–35.2°C) against outdoor swings of 24.5°F (13.6°C), and the 14-day weekly average trend shows a steady gentle rise (92.8→93.6→93.4→93.9°F) consistent with late-July seasonal warming. Vibration peaks 14 of 15 days (~19.7 mG rising to ~35.0 mG, avg 1.7×) with dominant rhythm shifting from 20–50 Hz to 5–20 Hz across the day — a subtle evolution in fanning character worth tracking. Gas heater-scan shows the July 17 changepoint clearly: the 100°C step has risen +21% and 150°C +16% since then, while overall resistance remains suppressed — this low-step rise with sustained mid-step suppression suggests heavier volatiles (likely honey-ripening esters) accumulating in the hive air, consistent with a full super under active ripening. The strong temp–humidity anti-coupling (r=−0.76) and humidity–vibration coupling (r=+0.45) together confirm that as the brood nest warms, water vapor concentration drops (psychrometrics), and the colony responds with increased fanning — a textbook healthy thermoregulation-ventilation feedback loop.
🔬 Correlations & Discoveriesin-hive temp vs in-hive humidity vs vibration (14d) | r = -0.76Hive #3 shows a three-way thermoregulatory feedback loop: rising brood temperature drives down relative humidity (r=−0.76, psychrometric inverse at fixed absolute moisture), which in turn correlates with increased fanning vibration (r=+0.45) — the colony detecting a humidity/temperature shift and responding with coordinated ventilation; this is a textbook example of healthy distributed thermoregulation described by Stabentheiner et al. 2010, where individual fanning bees respond to local cues, producing the colony-level pattern captured across all three sensor channels.📚 Reference: Human et al. 2006, Ellis et al. 2008, Eouzan et al. 2019, Nieh & Tautz 2000, Stabentheiner et al. 2010▹ Action: On your next routine visit within 5–7 days, confirm fresh eggs and solid brood pattern in Hive #3 — the stable 93.9°F (34.4°C) brood temp, perfectly matched acoustics, and optimal 53.3% humidity all point to a colony at peak July health.▹ Action: Note the sustained gas heater-scan step-down since ~July 17 (320°C ref 96 kΩ vs. all-time avg 184 kΩ) in your inspection log — stable temperature and acoustics make peak-season honey ripening the most likely explanation; document any supers you observe to build a multi-season VOC baseline.