As of August 22, 2026, your apiary is in solid late-summer form — Hive #2 and Hive #3 remain textbook-healthy, and Iris has shown a welcome temperature recovery today; Hive #1's gradual multi-week cooling drift continues but its acoustics remain perfectly stable, consistent with a natural August brood contraction rather than any population loss.
Across all four hives, the deseasonalized gas resistance ~ in-hive temperature coupling (r = -0.63 to +0.82) reflects a shared late-summer physiology: as brood zones contract and heat output falls, hive VOC load shifts — a well-documented metabolic signature of seasonal brood reduction, not a stress signal (Seeley 1985; Human et al. 2006).
Against a wide outdoor swing of 66.4–94.7°F (19.1–34.8°C) at a very dry 18–40% RH and a gently rising barometric tendency (+0.92 hPa/3h signaling continued clearing), all four hives maintain clear daily fanning rhythms (15/15 days for every colony); Hive #2 holds the tightest brood arc (~1.8°F/~1.0°C), Hive #3 next (~2.5°F/~1.4°C), Iris showing a moderate ~3.6°F/~2.0°C swing, and Hive #1 the widest at ~7.6°F/~4.2°C — all consistent with late-August brood contraction and normal heat-load variation across colony sizes.
-
Iris healthy Score: 78/100📋 Overall Health
Your Iris hive has rebounded nicely — today's 24h average of 89.6°F (32.0°C) is -0.5°F (-0.3°C) below her all-time average of 90.1°F (32.3°C), a significant improvement from yesterday's -1.5°F gap, and the latest reading of 90.1°F (32.3°C) is exactly on her historical average; the previous 'watch' flag for gradual cooling drift is now resolving and no longer warrants concern. All 10 sound bands remain within ±0.9 dB of baseline, humidity averaged 42.3% (all-time avg 42.5%), and vibration at 17.5 mG avg with kurtosis 2.8 all confirm a fully active, intact population. Watch for continued temperature stabilization on your next routine visit.
🌅 Diurnal Cycle PatternsIris shows a 24h arc of 87.9–91.5°F (31.1–33.1°C) — a swing of 3.6°F (2.0°C) — with a clear diurnal rhythm tracking the warm August ambient; the 14-of-15 days fanning peak pattern (baseline ~16.6 mG rising to ~28.3 mG, avg 1.7×) is intact. The dominant vibration band sits at 80–120 Hz, consistent with active fanning, and the vibration dominant rhythm band has shifted from 20–50 Hz to 50–80 Hz between the window halves — a normal late-summer metabolic transition. The 200–260 Hz and 150–200 Hz sound bands have been trending up slightly in the second half of the day (+1.2–1.4 dB), consistent with increased foraging/recruitment activity as outdoor temps peak; gas heater-scan at 441 kΩ (320°C ref) sits just below the all-time average of 447 kΩ and shows a moderate daily rhythm (strongest at 320°C, +14% swing), a stable fingerprint with no shape change indicating active honey-processing or propolis work at a steady background level.
🔬 Correlations & Discoveriestemperature vs gas_resistance (14d) | r = -0.63The partial correlation of gas resistance ~ in-hive temp (controlling for outdoor temp, r = -0.63) in Iris reflects the colony's endogenous metabolic coupling: as brood-zone heat output rises, fanning and brood-pheromone VOC load increases, lowering MOX resistance — a genuine hive-physiology signal decoupled from ambient weather, consistent with Iris's active late-summer brood rearing.📚 Reference: Human et al. 2006, Seeley 1985, Winston 1987temperature vs humidity (14d) | r = -0.48The deseasonalized in-hive temp ~ humidity anti-correlation (r = -0.48) is standard psychrometric homeostasis: as the colony warms its brood zone, the same absolute moisture content reads as a lower RH% — a sign of active hygroregulation, not drying stress.📚 Reference: Eouzan et al. 2019, Human, Nicolson & Dietemann 2006, Ellis et al. 2008▹ Action: On your next routine visit, a quick look at Iris's brood frames for fresh eggs will confirm the temperature recovery reflects resumed or stable laying activity. -
Hive #2 warning Score: 82/100📋 Overall Health
Your Hive #2 remains the apiary's thermal anchor with a 24h average of 95.2°F (35.1°C) — exactly on its all-time average and squarely in the ideal 93–97°F (34–36°C) band with an impressively tight 24h arc of only 1.8°F (1.0°C); humidity averaged 45.7% (all-time avg 46.2%) and vibration at 15.1 mG avg with kurtosis 3.3 are both on-baseline. The one item worth noting: the 100–150 Hz sound band has drifted -4.5 dB below its all-time baseline (the largest single-band delta in the apiary), with the low-frequency bands (100–260 Hz) all trending down in the second half of the day; this is a single-sensor, single-band signal with no corroborating temperature or vibration anomaly, so it is not alarming, but it is worth a look at your next routine inspection. Gas resistance at ~49 kΩ remains below its all-time avg of ~61 kΩ, consistent with ongoing honey-ripening VOC activity as previously noted.
🌅 Diurnal Cycle PatternsHive #2's 24h arc of 94.5–96.3°F (34.8–35.7°C) is the tightest in the apiary — outstanding late-summer brood clamping with a vibrant 15/15-day fanning rhythm (baseline ~12.4 mG peaking to ~50.8 mG, avg 4.1×, the highest peak-ratio in the apiary). The dominant vibration rhythm has shifted from the 5–20 Hz band to 160–200 Hz between window halves, with 120–160 Hz and 160–200 Hz both strengthening (+7.5 and +7.7 dB rhythm amplitude respectively) — consistent with intensifying upper-harmonic fanning activity, likely linked to active honey-ripening late in the season. Gas heater-scan shows the low-temperature steps (100°C and 150°C) declining -25% and -22% respectively over the window while mid-to-high steps hold more steadily — a shape change in the scan curve indicating the VOC mix is shifting toward heavier or less-volatile compounds, consistent with honey curing tapering toward completion (Bankova et al. 2000; Frizzera et al. 2020).
🔬 Correlations & Discoveriestemperature vs gas_resistance (14d) | r = +0.82The strong deseasonalized in-hive temp ~ gas resistance coupling (r = +0.82) in Hive #2 reflects honey-ripening physiology: as the colony heats its stores and intensifies fanning, VOC output rises in proportion — a healthy, active metabolic state where temperature and chemical environment move together, not a stress signal.📚 Reference: Frizzera et al. 2020, Human et al. 2006, Seeley 1985temperature vs humidity (14d) | r = +0.81The positive deseasonalized temp ~ humidity coupling (r = +0.81, partial r = +0.48 controlling for outdoor) in Hive #2 captures the evaporative-cooling water-carrier behaviour: on warmer-than-average periods the colony increases both heat output and water evaporation, raising in-hive RH — a coordinated thermoregulatory response documented by Ellis et al. 2008.📚 Reference: Eouzan et al. 2019, Ellis et al. 2008⚠️ Issue: 100–150 Hz sound band is -4.5 dB below all-time baseline (all other bands within ±2 dB); low-frequency bands trending further down in the second half of the day — single-channel signal, no corroborating anomaly, but worth noting.▹ Action: On your next routine visit, note the fill level and capping progress on Hive #2's supers — the declining low-temperature gas heater-scan steps suggest honey processing may be tapering, and observe whether entrance flight activity at the low end of the day has changed, which would help explain the drifting low-frequency sound bands. -
Hive #1 warning Score: 73/100📋 Overall Health
Your Hive #1's 24h average of 86.1°F (30.1°C) is now -0.9°F (-0.5°C) below its all-time average of 87.0°F (30.5°C) — the weekly trend shows a continued slow drift (87.6 → 87.8 → 86.2 → 85.3°F over four weeks), yet all 10 sound bands remain within ±0.1 dB of their all-time baseline, a near-perfect acoustic fingerprint confirming the worker population is fully intact and active. The most parsimonious explanation remains a natural August brood contraction or brief laying pause: the colony is simply not heating as large a brood zone, while the acoustics conclusively rule out any population loss. Humidity averaged 39.3% (all-time avg 37.6%) — slightly above its historical norm but well within a healthy range; a brood-frame check on your next routine visit remains the sensible next step.
🌅 Diurnal Cycle PatternsHive #1 shows the widest 24h arc in the apiary at 82.2–89.8°F (27.9–32.1°C) — a swing of 7.6°F (4.2°C) — reflecting a smaller active brood zone with less thermal mass to buffer the late-August ambient swings; the 15/15-day fanning rhythm (baseline ~15.8 mG peaking to ~23.4 mG, avg 1.5×) is intact and healthy. The per-band sound analysis shows no strong daily rhythm (max 600–800 Hz at only 1.0 dB) and both the 800–1500 Hz and 1500–3600 Hz rhythm amplitudes have weakened to ~0 dB over the window — a gentle flattening of the acoustic diurnal structure that matches a colony with a contracting brood zone and reduced nectar-processing activity heading into late August. Gas heater-scan shows the dominant rhythm band shifting from 150°C to 100°C and 10/10 bands showing a daily cycle (strongest at 200°C, +41% swing), indicating active daily ventilation cycling that is modulating the full VOC spectrum — consistent with a metabolically active colony managing a smaller but well-maintained hive interior.
🔬 Correlations & Discoveriesgas_resistance vs temperature (14d) | r = -0.8The strong partial correlation of gas resistance ~ in-hive temp controlling for outdoor temp (r = -0.80) in Hive #1 captures brood-contraction physiology: as the heated brood zone shrinks in late summer, metabolic VOC output falls and MOX resistance rises in step — a genuine hive-specific metabolic coupling, not a sensor artifact, and consistent with the observed gentle multi-week temperature drift.📚 Reference: Seeley 1985, Winston 1987, Human et al. 2006⚠️ Issue: Gradual 14-day cooling drift continuing: 24h avg 86.1°F (30.1°C) trending -1.7°F (-0.9°C) below all-time avg of 87.0°F (30.5°C); all 10 acoustic bands within ±0.1 dB of baseline confirming a full, intact population — consistent with a natural August brood contraction or laying pause.▹ Action: On your next routine visit, check Hive #1's brood frames for fresh eggs and laying pattern — the acoustically confirmed intact population is reassuring, and a quick brood look will clarify whether the slow temperature drift reflects a natural late-summer contraction or a longer laying pause worth monitoring. -
Hive #3 healthy Score: 90/100📋 Overall Health
Your Hive #3 continues its excellent run — brood temperature averaged 93.2°F (34.0°C) with a flat weekly arc (93.2 → 93.7 → 93.2 → 92.7°F), sitting just -0.2°F (-0.1°C) below its all-time average of 93.4°F (34.1°C) and solidly in the ideal 93–97°F (34–36°C) band; all 10 sound bands are within ±0.2 dB of their all-time baseline — a textbook stable colony. Humidity averaged 47.7% (all-time avg 47.8%), the most consistently brood-optimal RH in the apiary; vibration at 21.5 mG avg with kurtosis 2.7 and 15/15-day fanning peaks sits right on its all-time average of 20.8 mG — everything looks excellent heading deeper into late August.
🌅 Diurnal Cycle PatternsHive #3 shows a 24h arc of 92.2–94.7°F (33.4–34.8°C) — a swing of 2.5°F (1.4°C) — with strong brood clamping and clear 15/15-day fanning peaks (baseline ~19.5 mG rising to ~35.2 mG, avg 1.8×). All 6 vibration bands show a daily rhythm, dominated by the 5–20 Hz band (3.0 dB) reflecting normal structural-resonance ventilation cycling; the 80–120 Hz dominant vibration band at -8.2 dB (vs all-time -8.5 dB) is slightly elevated, consistent with active fanning. Gas heater-scan at 89 kΩ (320°C ref) is just below its all-time avg of 94 kΩ with no strong per-band daily rhythm (max +9% at 320°C) and a notably flat, shape-stable curve across all 10 plate temperatures — a reassuring sign that hive chemistry is steady with no significant shift in VOC mix, consistent with well-cured honey stores and stable brood-pheromone background. A humidity step-change of +2.77% around August 10 was detected; this aligns with the peak fanning season and evaporative-cooling water-carrier activity, a normal late-summer response (Ellis et al. 2008).
🔬 Correlations & Discoveriestemperature vs gas_resistance vs humidity (14d) | r = +0.77Hive #3's trio of deseasonalized couplings (temp~gas r=+0.77, temp~humidity r=+0.71, humidity~gas r=+0.60) form a coherent physiological signature: brood warmth, moisture, and VOC output all rise and fall together as a single integrated metabolic system — the textbook picture of a healthy, tightly regulated colony sustaining optimal brood conditions through late summer.📚 Reference: Human et al. 2006, Frizzera et al. 2020, Eouzan et al. 2019▹ Action: On your next routine visit, note the fill level and capping progress on Hive #3's supers — the flat, shape-stable gas heater-scan profile suggests honey processing is largely stable, and a capped-frame count will confirm whether this colony is ready for late-summer harvest.