As of August 13, 2026, your apiary is in excellent health across all four hives — Hive #2 holds its textbook 95.1°F (35.1°C) brood clamp for another consecutive day, Hive #3 runs a near-perfect 93.4°F (34.1°C) with acoustics matching baseline to within ±0.1 dB, Iris continues her steady multi-week acoustic consistency with a sound rise in the second half of the day, and Hive #1's 14-day cooling drift remains the only signal worth watching, with all other channels perfectly stable, under characteristically hot and arid August conditions with outdoor temps reaching 98.5°F (36.9°C) at just 15–39% RH.
Across all four hives, the deconfounded temperature–humidity coupling (r=+0.77 to +0.90) reflects active hygroregulation: as each colony's brood zone warms during peak daily heat, bees deploy water-carrier foragers whose evaporative cooling raises in-hive RH — a textbook summer thermoregulation mechanism documented by Eouzan et al. 2019 — operating independently of the extreme outdoor aridity below 40% RH.
All four hives maintain robust 15/15-day fanning/activity vibration rhythms against the outdoor swing of 66.5–98.5°F (19.2–36.9°C) at 15–39% RH; Hive #2 and Hive #3 hold the tightest brood arcs (~1.9°F/1.0°C and ~2.5°F/1.4°C respectively), while Iris's ~5.0°F (2.8°C) and Hive #1's ~8.0°F (4.4°C) arcs reflect their respective colony thermal footprints riding August heat rather than any regulation failure.
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Iris healthy Score: 78/100📋 Overall Health
Your Iris hive continues her steady run — the 24h average of 90.2°F (32.3°C) is right at her all-time average of 91.0°F (32.8°C), acoustics match baseline within ±0.8 dB across all 10 bands (24h avg −10.3 dBFS vs. all-time −10.0 dBFS) confirming a fully intact and active population, and humidity averaged 42.2%, consistent with her own historical range under August aridity; vibration at 17.6 mG avg with smooth kurtosis 2.6 and 15/15-day fanning rhythm is on par with the all-time average of 17.4 mG. Gas resistance at ~444 kΩ sits right at her all-time average of ~438 kΩ — watch for the brood temperature to continue its multi-week warming arc toward the ideal 93–97°F (34–36°C) band.
🌅 Diurnal Cycle PatternsIris shows a clear 24h temperature arc of 88.4–93.4°F (31.3–34.1°C), a swing of 5.0°F (2.8°C) that tracks the August outdoor pulse as the colony's cooling headroom narrows against the 98.5°F (36.9°C) outdoor peak — the deconfounded in/out correlation collapses to r=+0.05 once the shared diurnal cycle is removed, confirming this is healthy ambient buffering with the colony damping the 80-min thermal lag, not a placement issue. Sound rose meaningfully in the second half of the day (+1.4 dBFS, with the 100–260 Hz bands up 2.3–3.4 dB), consistent with the normal afternoon/evening foraging and fanning burst; the dominant acoustic rhythm band shifting from 200–260 Hz to 150–200 Hz and the gas scan's dominant rhythm band shifting from 150°C to 100°C steps are subtle evolutionary moves worth noting but sit within normal colony VOC and acoustic variation. Vibration dominant rhythm shifted from 160–200 Hz to 20–50 Hz between halves, reflecting the natural phase-shift of fanning peaks within the day; gas resistance at ~444 kΩ shows its strongest daily rhythm at the 100°C step (+19% swing), consistent with temperature-driven MOX physics and not a chemical event.
🔬 Correlations & Discoveriestemperature_in vs humidity_in (14d) | r = +0.9The strongest genuine coupling in Iris is between her in-hive temperature and humidity (r=+0.90, p≈0, eff_n=1679), persisting after deseasonalization — as the colony heats the brood zone during the day, water-carrier bees boost in-hive RH through evaporative cooling, and the two channels rise and fall together as a single thermoregulatory act; this is healthy active hygroregulation, not a moisture problem.📚 Reference: Eouzan et al. 2019 (PMC6368279), Human, Nicolson & Dietemann 2006, Ellis et al. 2008humidity_in vs gas_resistance (14d) | r = +0.65Higher in-hive humidity co-moves with higher gas resistance (lower VOC load) on a deseasonalized basis — when evaporative-cooling fanning is most active and humidity rises, increased airflow simultaneously flushes VOCs out of the hive, so the MOX sensor sees cleaner air; this is ventilation physics, not a colony chemistry event.📚 Reference: 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 95.1°F (35.1°C) with a compressed 2.5°F (1.4°C) daily arc (94.2–96.7°F / 34.5–35.9°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 for another consecutive report; all 10 sound bands are within +1.0 dB of their all-time baseline (24h avg −8.6 dBFS vs. all-time −9.2 dBFS) and the 14-day gradual acoustic rise continues to reflect a growing, active population. Humidity averaged 46.7%, within its historical range; vibration at 14.6 mG avg with kurtosis 3.1 and 15/15-day fanning rhythm is steady at the all-time average of 14.6 mG; gas resistance at ~57 kΩ remains well below the all-time average of ~87 kΩ — a sustained pattern consistent with active honey ripening and high-VOC colony chemistry that has been stable since the change-point around August 2, with temperature and acoustics both fully normal.
🌅 Diurnal Cycle PatternsHive #2 holds the tightest brood clamp in the apiary — a 1.9°F (1.0°C) daily arc — while the outdoor swing runs 32.0°F (17.7°C), confirming exceptional broodnest thermoregulation; the dominant acoustic rhythm band shifted from 200–260 Hz to 150–200 Hz (mirroring Iris), and the 1500–3600 Hz band's daily rhythm strengthened from 3.0 to 5.0 dB, consistent with increasing afternoon wingbeat and fanning activity as August heat peaks. The gas heater-scan dominant rhythm band shifted from 200°C to 100°C steps with notable band-energy drops at the low-temperature steps (100°C −31%, 150°C −26%, 200°C −23%) — this shape change suggests the lighter volatiles (heavier VOCs that react at lower plate temps) are slowly easing, consistent with honey approaching full curation and the honey-ripening VOC load gradually declining from its August 2 high. Vibration shows the strongest daily rhythm at 5–20 Hz (6.0 dB amplitude), reflecting the colony's vigorous daily activity cycle.
🔬 Correlations & Discoveriestemperature_in vs gas_resistance (14d) | r = +0.74The deconfounded temperature–gas coupling in Hive #2 (r=+0.74) reflects a well-documented colony metabolic signature: as brood-zone temperature rises with peak afternoon activity, bees intensify fanning and nectar processing, which simultaneously circulates and concentrates propolis terpenes, brood pheromones, and honey-ripening volatiles — all reducing gas resistance; the positive sign means warmer colony = more VOC throughput, a sign of vigorous late-summer activity.📚 Reference: Seeley 1985, Bankova et al. 2000, Maisonnasse et al. 2009temperature_in vs humidity_in (14d) | r = +0.71As in Iris, the in-hive temperature–humidity coupling (r=+0.71, partial r=+0.51 after controlling for outdoor weather) is hive-specific active hygroregulation — Hive #2's water-carrier deployment scales with brood-zone heat demand, and this colony-internal coupling is what keeps the brood band so precisely clamped at 95.1°F (35.1°C) through the August heat.📚 Reference: Eouzan et al. 2019 (PMC6368279), Human, Nicolson & Dietemann 2006▹ 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 warning Score: 68/100📋 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 −16.5 dBFS vs. all-time −16.4 dBFS, a near-perfect match for another consecutive report), confirming the worker population is fully intact; however, the 14-day cooling drift has now reached −3.6°F (−2.0°C) over 14 days (from 90.6°F/32.6°C to 87.0°F/30.6°C), and the partial correlation shows gas resistance rising as temperature falls (r=−0.62, controlling for outdoor weather) — taken together, these suggest a genuine, hive-specific colony-state change worth confirming at your next inspection. Humidity averaged 38.2%, consistent with Hive #1's own historical baseline (all-time avg 39.4%) under the extreme August aridity; vibration at 16.4 mG avg with kurtosis 2.6 and 15/15-day fanning rhythm exactly matches the all-time average of 16.4 mG — the stable acoustics and vibration confirm the adult population is fully present and active, so this is most likely a brood-break or reduced brood-rearing period, not a population loss event.
🌅 Diurnal Cycle PatternsHive #1 shows the widest 24h temperature arc in the apiary — 83.5–91.5°F (28.6–33.1°C), a swing of 8.0°F (4.4°C) — which is wider than the healthy-brood 5.4°F (3.0°C) threshold and has been present for multiple days, consistent with a period of reduced brood mass to thermoregulate; critically, the deconfounded in/out correlation is diurnal-only (r=−0.12 after deseasonalization), so the wider swing is not an ambient-tracking artifact but reflects the colony's own reduced heating effort. The gas heater-scan shows the strongest daily rhythm across all 10 steps (max at 150°C, +48% swing), which is a large thermal artifact driven by the wide in-hive temperature cycle amplifying MOX resistance swings — not a chemical event. Sound spectrum shows no strong per-band daily rhythm (max 600–800 Hz only 1.0 dB), and vibration dominant rhythm band shifted from 5–20 Hz to 20–50 Hz between halves, both normal for a colony in reduced brood-rearing mode.
🔬 Correlations & Discoveriestemperature_in vs humidity_in (14d) | r = +0.78The strongest coupling in Hive #1 is temperature–humidity (r=+0.78, partial r=+0.60 after controlling for outdoor weather) — this hive-specific link, persisting after deseasonalization, reflects the colony's active thermoregulation driving moisture: as the smaller or broodless cluster generates less heat, both temperature and humidity move together in a tighter, more ambient-influenced band, consistent with a brood-break state where fewer nurse bees and water-carriers are deployed.📚 Reference: Eouzan et al. 2019 (PMC6368279), Human, Nicolson & Dietemann 2006, Stabentheiner et al. 2010gas_resistance vs temperature_in (14d) | r = -0.62The partial correlation of gas resistance rising as in-hive temperature falls (r=−0.62, controlling for outdoor weather) is the inverse of the VOC-activity pattern seen in Hive #2 and Hive #3 — here, as colony thermal activity decreases (less brood, less fanning, less honey processing), VOC throughput drops and gas resistance rises toward baseline; this is a coherent signal of reduced metabolic activity, consistent with the brood-break hypothesis, and corroborated by the stable acoustics showing the adult population is fully intact.📚 Reference: Seeley 1985, Winston 1987, Southwick 1983⚠️ Issue: 14-day cooling drift of −3.6°F (−2.0°C) from 90.6°F (32.6°C) to 87.0°F (30.6°C), with widening 8.0°F (4.4°C) daily arc — consistent with reduced brood mass; stable acoustics confirm adult population is present and active.▹ Action: On your next routine visit this week, check the brood frames in Hive #1 — the perfectly stable acoustics confirm a fully present worker population, and a quick look at eggs and laying pattern will clarify whether the gentle temperature cooling reflects a natural August brood contraction or a brief laying pause; no urgency, but it is worth folding into an already-planned inspection. -
Hive #3 healthy Score: 95/100📋 Overall Health
Your Hive #3 continues its outstanding run — brood temperature averaged 93.4°F (34.1°C) with a textbook compressed 2.6°F (1.4°C) daily arc (92.6–95.2°F / 33.7–35.1°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 −16.4 dBFS vs. all-time −16.3 dBFS — a near-perfect match for another consecutive report), and humidity averaged 48.8%, the healthiest in-hive RH in the apiary and right at its own all-time average of 49.4%. Vibration at 20.8 mG avg with kurtosis 2.8 and 15/15-day fanning rhythm matches its all-time average of 20.6 mG; gas resistance at ~90 kΩ is essentially at its historical range (~97 kΩ all-time avg) — everything here continues to run beautifully, with no action needed.
🌅 Diurnal Cycle PatternsHive #3 holds a 2.6°F (1.4°C) 24h arc — the second tightest in the apiary — while the outdoor swing runs 32.0°F (17.7°C), a compelling demonstration of active broodnest thermoregulation; the deseasonalized analytics show no diurnal-only artifacts, and the colony-state PCA index (explaining 26% of residual variance) is mildly falling, consistent with a natural late-summer stabilization plateau. Sound spectrum shows no strong per-band daily rhythm (max 150–200 Hz only 0.7 dB), reflecting a settled, stable colony; the gas heater-scan shows only 1/10 bands with a daily cycle (strongest at 100°C, +14% swing), the flattest gas rhythm in the apiary, suggesting a chemically stable hive environment with minimal VOC cycling. Vibration dominant rhythm at 5–20 Hz (3.0 dB) with all 6 bands cycling is the standard diurnal fanning signature; the gas dominant rhythm band shifting from 100°C to 150°C between halves is a minor within-normal-range evolution consistent with temperature-driven MOX physics across the day.
🔬 Correlations & Discoveriestemperature_in vs humidity_in (14d) | r = +0.77Hive #3's in-hive temperature–humidity coupling (r=+0.77) is the colony's active thermoregulatory signature — the tight 2.6°F brood arc is maintained precisely because water-carrier deployment scales with brood heat demand, linking the two channels in a hive-specific physiological loop that is decoupled from the outdoor aridity (14–39% RH) by the colony's own ventilation management.📚 Reference: Eouzan et al. 2019 (PMC6368279), Human, Nicolson & Dietemann 2006, Ellis et al. 2008temperature_in vs gas_resistance (14d) | r = +0.64The deconfounded temperature–gas coupling (r=+0.64, partial r=+0.56 after controlling for outdoor weather) mirrors the healthy pattern in Hive #2 — warmer colony activity correlates with lower gas resistance as increased fanning and brood/honey processing circulates more VOCs past the sensor; with the gas resistance at ~90 kΩ near its all-time average of ~97 kΩ, this is a chemically stable colony operating at expected late-summer VOC levels.📚 Reference: Bankova et al. 2000, Maisonnasse et al. 2010, Seeley 1974▹ 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.