As of August 7, 2026, all four hives are navigating a hot, exceptionally arid August (outdoor peak 97.2°F / 36.2°C, humidity as low as 11.8%) in solid form — Hive #2 and Hive #3 continue their textbook brood clamping, Hive #1 remains acoustically perfect with a gentle temperature lull, and Iris is pushing further up her multi-week warming arc, now touching the lower edge of the ideal brood band.
All four hives show the deseasonalized temp–humidity coupling (r = +0.62 to +0.89) predicted by psychrometric theory — as brood-nest temperature rises, the same absolute water load reads as a lower relative humidity, a colony homeostasis signal rather than a dryness concern, and the effect is cleanest on Iris where the rising temperature arc is most dynamic.
The apiary's wide outdoor swing of 69–97°F (20.6–36.2°C) under extreme ambient dryness (12–34% RH) drives clear daily fanning/activity vibration rhythms across all four hives (14–15 of 15 days with distinct peaks); Hive #2's ultra-compressed 1.5°F (0.8°C) and Hive #3's 2.2°F (1.2°C) brood arcs confirm the deepest, most-staffed brood nests, while Iris's 4.2°F (2.3°C) and Hive #1's 6.0°F (3.3°C) arcs reflect colonies whose thermal footprint is somewhat smaller or whose sensor samples a broader temperature zone.
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Iris healthy Score: 80/100📋 Overall Health
Your Iris hive continues her encouraging multi-week warming arc — the 24h average of 91.9°F (33.3°C) is +1.4°F (+0.8°C) above yesterday's report and the weekly trend now reads 90.0 → 90.9 → 90.7 → 91.9°F (32.2 → 32.7 → 32.6 → 33.3°C), closing steadily on the ideal 93–97°F (34–36°C) brood band; all 10 sound bands match her all-time baseline within ±1.3 dB (avg −9.6 dBFS vs. all-time −10.3 dBFS), confirming a fully intact and active worker population. Humidity averaged 42.6%, consistent with her historical range under very dry outdoor conditions; vibration is smooth at kurtosis 2.7 with a healthy daily fanning peak (15/15 days, baseline ~16.6 mG peaking to ~29.4 mG); gas resistance at 419 kΩ is right on her all-time average of 441 kΩ — on your next routine visit, a quick look at brood frames to confirm fresh eggs and a solid laying pattern will anchor this warming arc to physical reality.
🌅 Diurnal Cycle PatternsIris shows a clear daily temperature cycle averaging +3.9°F (+2.2°C) peak-to-trough, with the in-hive low of 89.7°F (32.1°C) sitting well above the outdoor peak of 97.2°F (36.2°C) is not the case here — the outdoor high at 97.2°F actually exceeds the in-hive range, which is expected physics when ambient approaches the brood setpoint and is a sign of active thermoregulation, not poor sensor placement; the deseasonalized analytics confirm the in-hive/outdoor coupling is diurnal-only (raw r=+0.59, deconfounded r=+0.14) with outdoor leading by ~90 min — textbook thermal-mass buffering. The dominant vibration rhythm band shifted from 20–50 Hz to 5–20 Hz in the second half of the window, worth watching as a low-frequency modulation consistent with DVAV recruitment signalling (Nieh & Tautz 2000); the gas heater-scan dominant rhythm band also migrated from 200°C to 100°C, suggesting the low-temperature VOC fingerprint (heavier, humidity-sensitive volatiles) is becoming more prominent in the daily cycle — consistent with afternoon fanning cycling honey-processing volatiles at the sensor.
🔬 Correlations & Discoveriestemperature vs humidity (14d) | r = +0.89The strongest deconfounded correlation in Iris's data (r=+0.89, eff_n=1453) reflects psychrometric coupling: as the brood nest warms, the same absolute water vapour reads as a lower RH%, so the two channels must rise and fall together — this is active hygroregulation, not a sensor artefact or drying concern.📚 Reference: Eouzan et al. 2019 (PMC6368279), Human, Nicolson & Dietemann 2006, Ellis et al. 2008humidity vs gas_resistance (14d) | r = +0.58Humidity and gas resistance co-move on deseasonalized residuals (r=+0.58), consistent with water vapour independently shifting the MOX tin-dioxide baseline — when in-hive humidity rises (e.g. fanning brings moist air across the sensor), resistance also rises; this is a sensor-physics coupling, not a VOC event.📚 Reference: Burgues & Marco 2018, Human et al. 2006▹ Action: On your next routine visit, glance at the brood frames in Iris to confirm fresh eggs and a solid laying pattern — her intact acoustics and continued warming arc both point to a colony in good stride. -
Hive #2 healthy Score: 84/100📋 Overall Health
Your Hive #2 remains the apiary's most active colony — brood temperature is locked at a 24h average of 95.4°F (35.2°C) with an ultra-compressed 1.5°F (0.8°C) daily arc (94.8–96.3°F / 34.9–35.7°C), right on its all-time average of 95.0°F (35.0°C) and squarely in the ideal 93–97°F (34–36°C) zone; the 14-day broadband acoustic rise is continuing (+2.7 dB in the 100–150 Hz band vs. all-time baseline, overall avg −8.3 dBFS vs. all-time −9.8 dBFS), fully consistent with sustained fanning and honey-processing activity. Humidity averaged 46.7%, healthy and within range; vibration is smooth at kurtosis 3.0 with a strong daily fanning rhythm (15/15 days, baseline ~12.2 mG peaking to ~49.8 mG); gas resistance at 65 kΩ remains well below its all-time average of 135 kΩ but, with brood temperature and acoustics fully intact, this is a sustained honey-ripening VOC signature — on your next routine visit, note the fill level and capping progress of the supers.
🌅 Diurnal Cycle PatternsHive #2 shows the tightest brood clamping in the apiary at just 1.5°F (0.8°C) daily swing, a hallmark of a large, well-staffed nest; the dominant sound rhythm band shifted from 100–150 Hz to 150–200 Hz between the first and second half of the analysis window (+5.1 dB), and the low-band energy rise (+5.0 dB at 100–150 Hz, +4.2 dB at 200–260 Hz over 14 days) reflects ongoing fanning/syrup-processing activity rather than any biological alarm signal. The vibration dominant rhythm band shifted from 50–80 Hz to 5–20 Hz, consistent with the DVAV low-frequency modulation that intensifies as colony foraging recruitment ramps up (Nieh & Tautz 2000); gas heater-scan rhythm has weakened at 100°C (swing fell from +24% to +4%) while the mid-temperature steps hold steady, suggesting the heavy-VOC load contributing to the low resistance is now more stable and less cyclically driven by daily temperature swings.
🔬 Correlations & Discoveriestemperature vs humidity (14d) | r = +0.7Deconfounded temp–humidity coupling (r=+0.70, eff_n=656) reflects brood-nest psychrometrics: warming generates evaporative water that raises absolute moisture, while cooling lowers RH% — active homeostasis, not a ventilation or condensation issue.📚 Reference: Human, Nicolson & Dietemann 2006, Eouzan et al. 2019 (PMC6368279)temperature vs gas_resistance (14d) | r = +0.69Temperature and gas resistance co-rise on residuals (r=+0.69, eff_n=609): as brood-nest temperature climbs, evaporation of honey-processing volatiles and brood pheromones increases, reducing resistance — a thermally-driven VOC-loading effect consistent with the sustained honey-ripening environment documented in Hive #2.📚 Reference: Burgues & Marco 2018, Stalidzans et al. 2017▹ Action: On your next routine visit, note the fill level and capping progress of the supers in Hive #2 — the sustained broadband acoustic rise and the low gas-resistance fingerprint strongly suggest an active honey-processing cycle worth anchoring to physical reality. -
Hive #1 healthy Score: 76/100📋 Overall Health
Your Hive #1 maintains its acoustically perfect streak — all 10 sound bands match their all-time baseline within ±0.2 dB (avg −16.3 dBFS vs. all-time −16.4 dBFS), confirming a fully intact worker population; the 24h average of 88.2°F (31.2°C) is −0.7°F (−0.4°C) below yesterday and continues the gentle multi-week plateau (weekly averages: 88.3 → 89.6 → 88.7 → 90.1°F / 31.3 → 32.0 → 31.5 → 32.3°C) that, with perfectly stable acoustics and a smooth vibration kurtosis of 2.6, most likely reflects a natural late-summer brood lull or a modestly smaller active brood patch — the colony hum rules out any population concern. Humidity averaged 37.0%, below the all-time average of 41.7% but fully explained by the apiary's extreme ambient dryness (12–34% outdoor RH); gas resistance at 425 kΩ is right on its all-time average of 415 kΩ — on your next routine visit, a look at eggs and laying pattern will clarify whether this gentle thermal plateau reflects an August brood lull or a brief queen laying pause.
🌅 Diurnal Cycle PatternsHive #1 shows a 6.0°F (3.3°C) daily temperature arc (85.0–91.0°F / 29.4–32.8°C) — the widest in the apiary, but with the in-hive low well above the outdoor low of 69.1°F (20.6°C) and the deconfounded partial correlation of gas resistance vs. in-hive temp (r=−0.61, controlling for outdoor weather) confirming the colony is still actively thermoregulating; no per-band sound daily rhythm is detectable (max 1.0 dB), consistent with a quieter August colony, while all 6 vibration bands show a clear daily cycle (dominant 5–20 Hz, 3.0 dB) reflecting normal fanning/foraging rhythms on 14 of 15 days. The gas heater-scan is strengthening its daily rhythm at both 100°C (+24% → +54% swing) and 150°C (+24% → +48% swing) with mid-step resistance rising +24–31% — this shape change, with low-temperature steps rising while mid-steps hold, is consistent with a shift toward lower-volatility compounds (likely propolis/wax aromatics) becoming more prominent as fanning activity circulates hive air.
🔬 Correlations & Discoveriestemperature vs humidity (14d) | r = +0.84Strong deconfounded temp–humidity coupling (r=+0.84, eff_n=1222) — the highest partial correlation in the apiary when controlling for outdoor temperature (r=+0.58) — indicates Hive #1's moisture regulation is tightly linked to brood-nest thermal state, consistent with a colony actively managing a moderate brood zone under arid conditions.📚 Reference: Human, Nicolson & Dietemann 2006, Eouzan et al. 2019 (PMC6368279)gas_resistance vs temperature (14d) | r = -0.61Controlling for outdoor temperature, gas resistance falls as in-hive temperature rises (partial r=−0.61), the expected MOX response to thermally-driven evaporation of brood pheromones and propolis terpenes — a healthy colony chemistry signal, not a stress indicator.📚 Reference: Burgues & Marco 2018, Maisonnasse et al. 2010▹ Action: On your next routine visit, check the brood frames in Hive #1 — the perfectly stable acoustics confirm a fully present population, and a quick look at eggs and laying pattern will clarify whether the gentle temperature plateau reflects a natural August brood lull or a queen in a brief laying pause. -
Hive #3 healthy Score: 95/100📋 Overall Health
Your Hive #3 remains the apiary's standout performer — brood temperature averaged 93.9°F (34.4°C) with a textbook 2.2°F (1.2°C) daily arc (93.0–95.2°F / 33.9–35.1°C), right on its all-time average of 93.5°F (34.2°C) and held firmly in the ideal 93–97°F (34–36°C) zone; all 10 sound bands match their all-time baseline within ±0.1 dB (avg −16.3 dBFS vs. all-time −16.3 dBFS — a near-perfect match for the eighth consecutive report), with humidity averaging 47.5% comfortably in the healthy range. Vibration at 20.6 mG avg with smooth kurtosis 2.7 is right on its all-time average of 20.8 mG; gas resistance at 99 kΩ is right on its all-time average of 97 kΩ, and with temperature and acoustics perfectly intact this reflects normal late-summer honey-processing activity — everything here continues to run beautifully.
🌅 Diurnal Cycle PatternsHive #3 shows the most stable diurnal profile in the apiary: a 2.2°F (1.2°C) temperature arc with essentially zero spectral drift across all 10 sound bands (max per-band delta ±0.1 dB) and all 6 vibration bands cycling cleanly (dominant 5–20 Hz, 3.0 dB; 15/15 days with a distinct fanning peak rising from ~19.5 mG to ~32.6 mG). The gas heater-scan dominant rhythm band shifted from 150°C to 100°C in the second half — only 2/10 steps show a daily rhythm, suggesting a stable, low-volatility VOC background with minimal daily evaporative cycling, consistent with a well-ripened honey store rather than actively processing fresh nectar.
🔬 Correlations & Discoveriestemperature vs humidity (14d) | r = +0.62Deconfounded temp–humidity coupling (r=+0.62, eff_n=683) reflects normal brood-nest psychrometrics; the diurnal-only humidity–outdoor humidity relationship (raw r=+0.44, deconfounded r=+0.02, outdoor leading by ~320 min) confirms the colony is effectively decoupling its moisture environment from ambient — a sign of active hygroregulation in a well-populated hive.📚 Reference: Human, Nicolson & Dietemann 2006, Eouzan et al. 2019 (PMC6368279)temperature vs gas_resistance (14d) | r = +0.43Moderate deconfounded temp–gas resistance coupling (r=+0.43, eff_n=610) — weaker than in Hive #2, consistent with Hive #3's more stable, lower-volatility VOC environment (honey well into ripening), where daily thermal excursions drive only modest additional evaporation from an already-mature honey store.📚 Reference: Burgues & Marco 2018, Bankova et al. 2000▹ Action: On your next routine visit, note the fill level and capping progress of supers in Hive #3 — the continued acoustic stability and the quieting gas heater-scan daily rhythm suggest honey curing may be at a mature stage, and a super observation will anchor this multi-week trend to your season records.