As of August 29, 2026, three of your four hives — Iris, Hive #1, and Hive #3 — are running clean late-summer patterns with stable acoustics, normal vibration, and brood temperatures on-baseline; Hive #2 remains the single hive to watch, its 17-day acoustic decline now holding steady at −16.6 dBFS against an all-time average of −10.1 dBFS, while brood temperature remains locked at a textbook 94.9°F (35.0°C).
Across the apiary, the deseasonalized analytics consistently show outdoor humidity and station pressure moving together (r≈+0.53 on every node), confirming the shared synoptic weather signal at this elevation-corrected site — a useful reminder that any apiary-wide quieting on a front passage is weather gating, not a colony event.
Against an outdoor swing of 64.1–88.3°F (17.9–31.3°C) at a very dry 17–38% RH with pressure easing gently higher (+0.85 hPa/3h, clearing trend), all four hives show clear daily vibration peaks and acoustically stable fingerprints; in-hive humidity across the apiary sits in the 40–46% range, tracking the dry ambient air in a fully normal late-summer ventilation pattern with no condensation risk.
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Iris healthy Score: 78/100📋 Overall Health
Your Iris hive is in good late-summer shape — the 24h average of 88.6°F (31.5°C) continues the gentle four-week cooling arc (90.9→88.9→88.7→86.9°F) and sits just 0.4°F (0.2°C) below the all-time average of 89.0°F (31.7°C), which is well within normal seasonal drift; all 10 acoustic bands are within ±0.8 dB of their historical baseline, vibration at 17.4 mG (kurtosis 2.4, peak 67 Hz) sits exactly on its all-time average of 17.4 mG, and humidity averaged 40.4% — consistent with the dry outdoor air and this hive's own norm. No inspections or voice logs were recorded this week; on your next routine visit, a quick check of the brood frames for fresh eggs will confirm the seasonal cooling reflects normal late-summer brood contraction.
🌅 Diurnal Cycle PatternsIris shows a healthy 5.6°F (3.1°C) daily temperature arc (85.9–91.5°F), well within the active-brood range, with a clean daily vibration rhythm peaking around 25.1 mG (1.5× baseline) on all 15 of 15 tracked days; the dominant vibration rhythm band shifted from 50–80 Hz to 5–20 Hz in the second half of the window, consistent with normal late-summer foraging-pattern modulation. The gas heater-scan shows its strongest daily rhythm at the 150°C step (+14% swing), with the dominant rhythm band shifting 150°C→100°C — a modest moisture-correlated artifact at the low-temperature steps that tracks the dry ambient RH cycle rather than any new VOC chemistry. Humidity held a tight 39.1–41.6% range, directly reflecting the very dry outdoor air (17–38% RH) through normal hive ventilation.
🔬 Correlations & Discoveriestemperature_in vs temperature_out (14d) | r = +0.25The deseasonalized residual coupling between in-hive and outdoor temperature is low (r=+0.25) with outdoor leading by ~110 minutes — this thermal-mass buffering lag is a positive sign of a well-insulated, actively thermoregulating colony, not a placement concern; the colony is successfully damping the 24°F (13°C) outdoor swing down to a 5.6°F (3.1°C) in-hive arc.📚 Reference: Stabentheiner, Kovac & Brodschneider 2010, PLoS ONE 5(1):e8967, Fahrenholz, Lamprecht & Schricker 1989, J. Comp. Physiol. B 159:551–560gas_resistance vs temperature_in (14d) | r = -0.33The partial correlation (gas resistance ~ in-hive temp | outdoor temp, r=−0.33) reflects normal hive thermodynamics: as the colony warms during peak activity, fanning intensifies and circulates more brood pheromones, propolis terpenes, and honey volatiles, lowering MOX resistance — a healthy metabolic signature, not a stress indicator, given stable acoustics and temperature.📚 Reference: Maisonnasse et al. 2010, PLoS ONE 5(10):e13531, Bankova et al. 2000, Apidologie 31:3–15▹ Action: On your next routine visit, check Iris's brood frames for fresh eggs and laying pattern to confirm the gentle seasonal cooling trend reflects normal late-summer brood contraction heading into autumn. -
Hive #2 warning Score: 60/100📋 Overall Health
Your Hive #2 remains the apiary's single signal to watch: brood temperature is locked at 94.9°F (35.0°C) with a razor-tight 2.5°F (1.4°C) daily arc right on its all-time average of 95.0°F (35.0°C), confirming textbook thermoregulation and an intact, active colony; however, the acoustic decline that began around August 23rd has now persisted for 17 days, with the overall level at −16.6 dBFS versus an all-time average of −10.1 dBFS (−6.5 dBFS deviation), the 100–150 Hz band −14.8 dB below baseline, and the 1500–3600 Hz band −11.5 dB below baseline. Vibration at 15.9 mG (kurtosis 2.8, peak 73 Hz) remains on-baseline with its characteristic 4.1× daily spike ratio, and humidity averaged 45.6% — healthy and stable; this remains a single acoustic-channel anomaly to confirm visually at your next routine visit this week. No inspections or voice logs were recorded this week.
🌅 Diurnal Cycle PatternsHive #2 shows the tightest brood clamping in the apiary — a compressed 2.5°F (1.4°C) daily arc (94.2–96.7°F / 34.5–35.9°C) — reflecting intense, ongoing brood thermoregulation; all 15 of 15 days show a clear vibration daily spike (baseline ~12.5 mG rising to ~51.2 mG, 4.1× ratio), with the dominant vibration rhythm band shifting 160–200 Hz → 20–50 Hz in the second half. The acoustic spectrogram shift is the key pattern: the 100–260 Hz bands have lost 7–15 dB versus baseline over 14 days while the 800–1500 Hz rhythm is strengthening (0.2 dB → 3.0 dB daily cycle amplitude) — a spectral reorganisation worth confirming visually. The gas heater-scan shows no strong per-band daily rhythm (max +9% swing at 280°C), consistent with stable colony chemistry; gas resistance at 45,134 Ω sits near its all-time average of 53,438 Ω, within normal range for this hive.
🔬 Correlations & Discoveriessound_energy vs sound_spectrum_100_150hz vs sound_spectrum_1500_3600hz (14d) | r = -0.87A statistically confirmed change-point around August 23rd marks the onset of a sustained −7.5 dBFS step in overall acoustic energy, with the largest losses in the 100–150 Hz (−14.8 dB) and 1500–3600 Hz (−11.5 dB) bands while brood temperature, vibration, and gas remain fully on-baseline; the most likely explanation is a reduction in foraging activity — consistent with late-summer dearth-driven recruitment wind-down — but because this acoustic shift has persisted for 17 days, a visual forager-traffic check at the entrance will help determine whether this is normal seasonal quieting or warrants closer monitoring heading into autumn.📚 Reference: Ramsey, Bencsik, Newton et al. 2020, Sci. Rep. 10:9798, Zgank 2021, Kanelis et al. 2023, Biology 12(11):1392temperature_in vs humidity_in (14d) | r = +0.54The deseasonalized in-hive temperature–humidity coupling (r=+0.54, partial r=+0.32 controlling for outdoor weather) reflects active evaporative-cooling behaviour: as the tightly regulated brood nest warms, water-carrier bees introduce moisture, raising RH — a healthy thermoregulatory response consistent with the colony's intense brood clamping at 94–96°F (34.4–35.6°C).📚 Reference: Human, Nicolson & Dietemann 2006, Naturwissenschaften 93:397–401, Ellis et al. 2008, J. Insect Physiol. 54:1516–1521⚠️ Issue: Sustained 17-day multi-band acoustic decline confirmed by a statistical change-point around August 23rd: overall sound at −16.6 dBFS vs all-time average of −10.1 dBFS; 100–150 Hz band −14.8 dB below baseline, 1500–3600 Hz band −11.5 dB below baseline; brood temperature, vibration, and gas all remain on-baseline — single acoustic channel anomaly persisting 17+ days.▹ Action: On your next routine visit this week, observe Hive #2's entrance for forager traffic — a visual count of returning foragers carrying pollen will help confirm whether this sustained acoustic decline reflects normal late-season dearth-driven recruitment wind-down or a more significant reduction in foraging activity worth monitoring heading into autumn. -
Hive #1 warning Score: 68/100📋 Overall Health
Your Hive #1 continues its gradual but acoustically-confirmed-benign cooling drift — the 24h average of 83.9°F (28.8°C) is now 1.8°F (1.0°C) below the all-time average of 85.7°F (29.8°C), continuing a steady 14-day cooling trend (87.6→86.2→84.7→82.6°F weekly); crucially, all 10 acoustic bands are within ±0.2 dB of their all-time baseline — a near-perfect spectral match confirming the full worker population is intact, which points clearly to a natural broodless or reduced-brood period (late-summer brood contraction, a laying pause, or supersedure gap) as the most likely explanation. Vibration at 16.2 mG (kurtosis 2.7, peak 115 Hz) sits right on its all-time average of 16.4 mG, and humidity averaged 40.3% — slightly above its own norm of 39.1% but well within a healthy range; no inspections or voice logs were recorded this week.
🌅 Diurnal Cycle PatternsHive #1 shows an active 6.3°F (3.5°C) daily temperature arc (80.7–87.0°F / 27.1–30.5°C) with a healthy 230-minute thermal-mass buffering lag behind outdoor temperature — a diurnal-only coupling that is a sign of a well-insulated colony, not a placement issue; all 15 of 15 days show a clear vibration daily spike (baseline ~15.8 mG rising to ~23.0 mG, 1.5× ratio), though vibration per-band rhythm is subdued (only 1/6 vibration bands show a daily cycle), consistent with the reduced-brood / lower metabolic state. The gas heater-scan is the most dynamic in the apiary — all 10 heater-scan steps show a daily rhythm (strongest at 200°C, +35% swing), with the dominant rhythm band shifting 100°C → 250°C in the second half; this mid-step daily cycling reflects normal propolis and brood-pheromone ventilation patterns amplified by the dry ambient air, not a chemistry change. The strong deseasonalized gas resistance ~ temperature coupling (partial r=−0.83) is the standout signature: as the brood nest temperature dips in its gradual cooling drift, VOC concentration rises slightly — consistent with reduced fanning throughput in a less-heated brood zone, a normal metabolic consequence of reduced brood.
🔬 Correlations & Discoveriestemperature_in vs gas_resistance (14d) | r = -0.83The strongest partial correlation in the apiary (gas resistance ~ in-hive temp | outdoor temp, r=−0.83) reflects the colony's reduced-brood thermodynamic state: less brood mass to heat means less metabolic activity, less fanning throughput, and a modest VOC build-up that the MOX sensor registers as slightly lower resistance — a benign, physics-driven relationship that corroborates the brood-break interpretation, not an independent stress signal.📚 Reference: Seeley 1985, Honeybee Ecology (Princeton UP), Maisonnasse et al. 2009, Apidologie 40:562–564, Burgues & Marco 2018, Sensors 18(2):339temperature_in vs temperature_out (14d) | r = +0.15The deseasonalized residual coupling (r=+0.15) with a 230-minute outdoor lead confirms that this colony is actively damping the ambient swing — the 6.3°F in-hive arc against a 24°F outdoor swing is healthy thermal-mass buffering, fully consistent with a colony in a natural brood-break period maintaining its cluster warmth.📚 Reference: Stabentheiner, Kovac & Brodschneider 2010, PLoS ONE 5(1):e8967, Fahrenholz, Lamprecht & Schricker 1989, J. Comp. Physiol. B 159:551–560⚠️ Issue: Gradual 14-day cooling drift: 24h average 83.9°F (28.8°C) is 1.8°F (1.0°C) below all-time average of 85.7°F (29.8°C), with a 4.0°F (2.2°C) decline over 14 weeks; acoustic spectrum is perfectly stable (all bands within ±0.2 dB), confirming intact population — most likely a natural late-summer brood contraction or laying pause.▹ Action: On your next routine visit, check Hive #1's brood frames for fresh eggs and brood pattern to confirm the gradual cooling drift reflects a natural late-summer brood contraction rather than an extended laying pause — the acoustically intact population is reassuring and there is no urgency. -
Hive #3 healthy Score: 75/100📋 Overall Health
Your Hive #3 continues its excellent run — the 24h average of 92.3°F (33.5°C) sits just 0.6°F (0.3°C) below the all-time average of 92.9°F (33.8°C), within the ideal brood band and continuing a gentle, entirely normal seasonal tail-off (93.6→93.2→92.5→91.8°F weekly); all 10 acoustic bands are within ±0.1 dB of their historical baseline — a textbook-stable fingerprint confirming a healthy, intact population. Vibration at 20.5 mG (kurtosis 2.7, peak 39 Hz) sits right on its all-time average of 20.9 mG with clear daily peaks (1.8× ratio on all 15 days), and humidity averaged 45.7% — slightly below its own norm of 47.2% but consistent with the dry ambient air and well within a benign range; the battery at 4,006 mV touched a new all-time low of 3,986 mV within the last 24 hours and is worth monitoring passively as solar input decreases into autumn. No inspections or voice logs were recorded this week.
🌅 Diurnal Cycle PatternsHive #3 shows a healthy 2.6°F (1.4°C) daily temperature arc (90.9–93.5°F / 32.7–34.2°C) — the tightest diurnal swing of the actively-brood-rearing hives — with all 6 vibration bands showing a clear daily rhythm (strongest in 5–20 Hz at 3.2 dB daily amplitude); vibration peaks from ~19.4 mG to ~34.7 mG (1.8×) on every tracked day, reflecting reliable fanning and foraging cycles. The gas heater-scan shows no strong per-band daily rhythm (max +9% swing at 320°C), indicating stable colony chemistry; gas resistance at 89,417 Ω is just below its all-time average of 92,939 Ω — effectively on-baseline, consistent with normal late-summer honey ripening and propolis activity. The deseasonalized in-hive temperature–humidity coupling (r=+0.45, partial r=+0.59) is the strongest of all hives, reflecting active evaporative-cooling water-carrier behaviour in a colony running the warmest stable brood temperature in the apiary.
🔬 Correlations & Discoveriestemperature_in vs humidity_in (14d) | r = +0.59The strongest in-hive temp–humidity partial coupling across the apiary (r=+0.59 controlling for outdoor weather) reflects active evaporative-cooling in a well-populated brood-rearing colony: as brood-nest temperature rises, water-carrier bees intensify moisture deposition, raising in-hive RH — a healthy thermoregulatory signature fully consistent with the colony's stable 92–93°F brood maintenance against a 64–88°F outdoor swing.📚 Reference: Human, Nicolson & Dietemann 2006, Naturwissenschaften 93:397–401, Ellis, Nicolson, Crewe & Dietemann 2010, Naturwissenschaften 97:429–433vibration_rms vs vibration_spectrum_5_20hz (14d) | r = +0.82The 5–20 Hz band carries the strongest daily vibration rhythm (3.2 dB amplitude) and leads overall vibration RMS, consistent with the dorsoventral abdominal vibration (DVAV) signal (~18 Hz) that modulates forager recruitment activity — this circadian low-frequency pattern is a positive sign of a colony with robust daily foraging and communication cycles heading into late summer.📚 Reference: Nieh & Tautz 2000, J. Exp. Biol. 203:1573–1579, Ramsey, Bencsik et al. 2018, Sci. Rep. 8:14571▹ Action: Keep an eye on Hive #3's battery passively — it touched a new all-time low of 3,986 mV within the last 24 hours (currently 4,006 mV); no action is needed yet, but monitor the trend as solar input decreases heading into autumn.▹ Action: On your next routine visit, note capping progress on Hive #3's supers — the stable acoustic and gas fingerprints suggest honey processing is mature and a capped-frame count will help plan late-summer harvest timing.