As of August 12, 2026, your apiary continues in excellent health — Hive #2 holds its textbook 95.1°F (35.1°C) brood clamp, Hive #3 runs another near-perfect day at 93.5°F (34.2°C), Hive #1's acoustics remain a flawless match to baseline, and Iris continues her steady multi-week warming arc, all under characteristically hot and arid August conditions with outdoor temps reaching 99.7°F (37.6°C) at just 16–30% RH.
A consistent apiary-wide signature this period is the strong positive coupling between in-hive temperature and in-hive humidity on deseasonalized residuals (r = +0.60 to +0.91 across all four hives), reflecting active metabolic water production and fanning-driven evaporative regulation — a textbook sign of colonies working hard to thermoregulate against the extreme August heat load (Stabentheiner et al. 2010; Human et al. 2006).
All four hives maintain robust daily fanning/activity vibration rhythms (14–15 of 15 days with clear peaks) against an outdoor swing of 69.6–99.7°F (20.9–37.6°C) at 16–30% RH; Hive #2 and Hive #3 hold the tightest brood arcs (~1.8°F/1.0°C and ~2.2°F/1.2°C respectively), while Iris's ~4.1°F (2.3°C) and Hive #1's ~5.4°F (3.0°C) arcs remain within healthy bounds for their respective colony sizes under the same intense summer thermal pulse.
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Iris healthy Score: 78/100📋 Overall Health
Your Iris hive is holding steady on her multi-week warming arc — the 24h average of 90.7°F (32.6°C) is right at her all-time average of 90.9°F (32.7°C), acoustics match baseline within ±0.5 dB across all 10 bands (24h avg −10.2 dBFS vs. all-time −10.0 dBFS) confirming a fully intact population, and humidity averaged 41.6%, consistent with her own historical range under August dryness. Vibration at 17.1 mG avg with smooth kurtosis 2.6 and a 15/15-day fanning rhythm is stable against the all-time average of 17.5 mG; gas resistance at ~443 kΩ is right at her all-time average of ~438 kΩ — watch for the brood temperature to continue closing the gap into the ideal 93–97°F (34–36°C) band over the coming weeks.
🌅 Diurnal Cycle PatternsIris shows a clear ~4.1°F (2.3°C) daily temperature arc (88.9–93.0°F / 31.6–33.9°C) — well within healthy brood-clamping bounds — with the colony's thermal-mass buffering confirmed by the deseasonalized analysis showing outdoor temperature leads in-hive by ~90 min while the deconfounded residual correlation drops to near zero (r=+0.06), meaning the diurnal in/out tracking is purely ambient buffering, not a thermoregulation issue. The dominant acoustic rhythm band shifted from 200–260 Hz toward 150–200 Hz in the second half of the window, and the dominant vibration rhythm band shifted from 160–200 Hz toward 80–120 Hz — both within normal diurnal foraging/fanning behavioural shifts and not flagged against Iris's own baseline; gas heater-scan rhythm migrated from 150°C to the 100°C step, consistent with moisture-sensitive lower-temperature plate steps tracking the colony's own humidity cycle.
🔬 Correlations & Discoveriestemperature_in vs humidity_in (14d) | r = +0.91The strongest deconfounded coupling in Iris is between in-hive temperature and humidity (r=+0.91, p≈0), reflecting the colony's active metabolic water production: as the brood nest warms under heater-bee activity, evaporative water from larval respiration and nectar processing raises local RH in tandem — a hallmark of a biologically active broodnest, not a sensor artifact (Human et al. 2006). The partial correlation controlling for outdoor weather (r=+0.31) confirms this is a genuine hive-specific physiological coupling, consistent with the colony's rising temperature arc and sustained acoustic brightness.📚 Reference: Eouzan et al. 2019 (PMC6368279), Human, Nicolson & Dietemann 2006, Stabentheiner, Kovac & Brodschneider 2010humidity_in vs gas_resistance (14d) | r = +0.65Humidity and gas resistance co-vary positively on deseasonalized residuals (r=+0.65) — when the hive is warmer and more metabolically active, both humidity and reducing-VOC load (brood pheromones, propolis volatiles, honey processing) rise together; gas resistance at ~443 kΩ is essentially at Iris's own all-time average of ~438 kΩ, so the absolute level is unremarkable and the coupling simply reflects a colony breathing and working in rhythm with itself (Maisonnasse et al. 2010).📚 Reference: Winston 1987, Burgues & Marco 2018, Maisonnasse et al. 2010▹ Action: On your next routine visit, glance at the brood frames in Iris to confirm fresh eggs and a solid laying pattern — the continued acoustic brightness and multi-week temperature rise both point to a colony building momentum heading into late August. -
Hive #2 healthy Score: 88/100📋 Overall Health
Your Hive #2 remains the apiary's thermal anchor — brood temperature averaged 95.2°F (35.1°C) with a compressed 1.4°F (0.8°C) daily arc (94.4–95.8°F / 34.7–35.4°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) zone; all 10 sound bands are within +1.1 dB of their all-time baseline (24h avg −8.7 dBFS vs. all-time −9.3 dBFS) and the 14-day gradual acoustic rise (+1.9 dBFS) continues to reflect a growing, active population. Humidity averaged 46.3%, within its historical range; vibration at 14.9 mG avg with kurtosis 3.0 and a 15/15-day fanning rhythm is steady; gas resistance at ~59 kΩ remains well below the all-time average of ~92 kΩ — a sustained pattern consistent with active honey ripening and high-VOC colony chemistry that has been stable since the change-point detected around August 2, with temperature and acoustics both normal.
🌅 Diurnal Cycle PatternsHive #2 exhibits the tightest brood clamping in the apiary — only a 1.4°F (0.8°C) peak-to-trough daily arc — reflecting maximum thermoregulatory precision from a large, well-resourced colony; sound bands trend down in the second half of the day (low bands −3 to −5 dB) while vibration bands trend up (+1.2 to +1.4 dB), a normal foraging/fanning phase separation where acoustic activity eases as vibration-based fanning takes over the thermal load. The 1500–3600 Hz acoustic rhythm is strengthening (4.0 → 6.0 dB), consistent with increasing high-frequency wingbeat energy from a growing forager population; the dominant vibration rhythm shifted from 5–20 Hz to 160–200 Hz in the second half, within normal behavioural variation for a large active colony. Gas heater-scan shows a step-down in the low-temperature plate steps (100°C −33%, 150°C −28%, 200°C −25%) — the shape shift toward relatively higher resistance at high-temperature steps (350–400°C) compared to the low steps suggests a change in the lighter, more volatile fraction of hive VOCs, most plausibly honey-curing alcohols and esters tapering as ripening progresses.
🔬 Correlations & Discoveriestemperature_in vs gas_resistance (14d) | r = +0.83The strongest deconfounded coupling in Hive #2 is temperature and gas resistance (r=+0.83) — as the brood nest heats, propolis terpenes and honey-processing VOCs volatilise more readily, lowering gas resistance in tandem; the change-point around August 2 (step of −18,126 Ω) likely marks a transition in ripening-stage chemistry rather than any colony stress, since temperature and acoustics remained perfectly stable through and after that date (Bankova et al. 2000; Maisonnasse et al. 2010).📚 Reference: Maisonnasse et al. 2010, Bankova et al. 2000, Stalidzans et al. 2017temperature_in vs humidity_in (14d) | r = +0.82Temperature and humidity couple strongly on deseasonalized residuals (r=+0.82, partial r=+0.49 controlling for outdoor weather), confirming active in-hive hygroregulation tied to metabolic heat — the colony's water-carrying and fanning workforce rises and falls in concert with the brood nest's thermal demands, a sign of a large, well-regulated colony actively managing its microclimate (Human et al. 2006).📚 Reference: Human, Nicolson & Dietemann 2006, Ellis et al. 2008▹ Action: On your next routine visit, check the fill level and capping progress of the supers in Hive #2 — the gradual settling of the low-temperature heater-scan steps over recent weeks suggests the heavy honey-processing VOC load may be easing as honey approaches full curation. -
Hive #1 healthy Score: 74/100📋 Overall Health
Your Hive #1 continues its acoustically exemplary run — all 10 sound bands match their all-time baseline within ±0.2 dB (24h avg −16.3 dBFS vs. all-time −16.4 dBFS, a near-perfect match for another consecutive report), confirming the worker population is fully intact; the 24h average of 88.1°F (31.1°C) is −0.7°F (−0.4°C) below the all-time average of 88.8°F (31.6°C), and the weekly arc (88.7 → 89.6 → 88.7 → 88.0°F) shows the gentle plateau has continued but remains stable rather than declining further. Humidity averaged 35.8%, below the 50–70% textbook band but consistent with Hive #1's own historical baseline (all-time avg 39.7%) under the extreme August aridity; vibration at 16.4 mG avg with kurtosis 2.6 and 14/15-day fanning rhythm exactly matches the all-time average of 16.4 mG — watch whether the temperature stabilises further or begins a warming trend over the next week.
🌅 Diurnal Cycle PatternsHive #1 shows a ~4.8°F (2.7°C) daily temperature arc (85.5–90.3°F / 29.7–32.4°C), within healthy bounds for a colony with a smaller or developing brood footprint riding the same intense August heat; the deseasonalized analysis confirms the in/out temperature relationship is purely diurnal (deconfounded r=−0.10) with outdoor leading by ~170 min — classic thermal-mass buffering, not a thermoregulation failure. No strong per-band acoustic daily rhythm (max 1.0 dB in 600–800 Hz) indicates a very stable, consistent sound environment without prominent foraging-cycle peaks — this is Hive #1's established character, matching baseline. Gas heater-scan shows all 10 steps cycling with a strong 48% daily swing at the 150°C step and a modest upward shift in the low-temperature steps (100°C +14%, 150°C +14%, 200°C +13%) since the first half — consistent with slightly increasing light-VOC or moisture load, tracking the positive partial correlation between gas resistance and in-hive temperature (r=−0.66 controlling for outdoor weather), a colony physiology signal rather than an environmental artifact.
🔬 Correlations & Discoveriestemperature_in vs humidity_in (14d) | r = +0.85Temperature and humidity couple strongly on deseasonalized residuals in Hive #1 (r=+0.85, partial r=+0.56 controlling for outdoor weather) — the colony's metabolic water and fanning activity rise and fall with brood-nest warmth, decoupled from outdoor humidity swings; this is a sign of active biological regulation, not a sensor artifact (Human et al. 2006; Eouzan et al. 2019).📚 Reference: Human, Nicolson & Dietemann 2006, Eouzan et al. 2019 (PMC6368279), Stabentheiner, Kovac & Brodschneider 2010gas_resistance vs temperature_in (14d) | r = -0.66The partial correlation of gas resistance with in-hive temperature controlling for outdoor weather is r=−0.66 — as the hive warms, gas resistance falls (more volatiles released), a clean in-hive physiology signal consistent with brood pheromone, propolis, and wax VOC emission increasing with temperature; the absolute gas level (~465 kΩ at the 320°C reference step) is right at Hive #1's all-time average of ~439 kΩ so no anomaly is present (Maisonnasse et al. 2010).📚 Reference: Maisonnasse et al. 2010, Burgues & Marco 2018▹ 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 contraction or a brief laying pause that has already resolved. -
Hive #3 healthy Score: 95/100📋 Overall Health
Your Hive #3 continues its outstanding run — brood temperature averaged 93.5°F (34.2°C) with a textbook compressed 1.9°F (1.1°C) daily arc (92.9–94.8°F / 33.8–34.9°C), exactly on its all-time average of 93.6°F (34.2°C) and firmly in the ideal 93–97°F (34–36°C) zone; all 10 sound bands match their all-time baseline within ±0.2 dB (24h avg −16.2 dBFS vs. all-time −16.3 dBFS — a near-perfect match for another consecutive report), and humidity averaged 49.0%, the healthiest in-hive RH in the apiary and right at its own all-time average of 49.5%. Vibration at 21.0 mG avg with kurtosis 2.9 and 15/15-day fanning rhythm matches its all-time average of 20.6 mG; gas resistance at ~89 kΩ is within its historical range (~98 kΩ all-time avg) — everything here continues to run beautifully, with no action needed.
🌅 Diurnal Cycle PatternsHive #3 holds a remarkably tight ~2.2°F (1.2°C) daily temperature arc with essentially zero acoustic diurnal rhythm (max 0.6 dB in 150–200 Hz) — an indicator of extreme thermoregulatory precision and a very stable sound environment throughout the day; vibration maintains a strong 5–20 Hz daily rhythm (3.0 dB) consistent with regular foraging-cycle recruitment activity, with all 6 vibration bands showing a clean daily cycle. Gas heater-scan shows only 1 of 10 steps with a significant daily rhythm (100°C at +14%) — the flatness of the gas cycle across mid and high plate temperatures reflects a stable, low-variation VOC environment, consistent with well-ripened honey stores and steady colony chemistry; the heater-scan curve shape (resistance rising steeply from 320°C → 375°C → 400°C) is stable against Hive #3's own history.
🔬 Correlations & Discoveriestemperature_in vs humidity_in (14d) | r = +0.6Temperature and humidity couple positively on deseasonalized residuals (r=+0.60) in Hive #3, reflecting active metabolic water production tied to brood-nest heating — notably, this coupling is weaker here than in the other hives (r=+0.60 vs. +0.82–0.91), consistent with Hive #3's extremely tight brood-temperature clamping leaving little residual variance for both channels to share; this is a sign of superior thermoregulatory precision (Human et al. 2006).📚 Reference: Human, Nicolson & Dietemann 2006, Ellis et al. 2008, Eouzan et al. 2019 (PMC6368279)temperature_in vs gas_resistance (14d) | r = +0.53Temperature and gas resistance couple modestly on deseasonalized residuals (r=+0.53) — as the brood nest micro-warms, propolis and brood-pheromone VOC emission rises slightly, lowering resistance; the absolute gas level (~89 kΩ) is close to Hive #3's all-time average (~98 kΩ) and the stable heater-scan shape confirms no significant change in the VOC fingerprint, consistent with a colony in steady late-summer operation (Bankova et al. 2000).📚 Reference: Maisonnasse et al. 2010, Bankova et al. 2000▹ Action: On your next routine visit, note the fill level and capping progress of the supers in Hive #3 — the continued acoustic perfection and stable gas heater-scan fingerprint both suggest this colony is operating at peak late-summer efficiency, well worth recording in your season notes.