As of August 6, 2026, all four hives are in solid late-summer form under hot, exceptionally arid conditions (outdoor peak 93.3°F / 34.1°C, humidity as low as 11.8%) — Hive #2 and Hive #3 continue their textbook brood-temperature clamping, Hive #1's acoustics remain perfectly matched to baseline, and Iris is continuing her steady warming arc toward the ideal brood band, giving the apiary a clean and reassuring picture heading deeper into August.
Hive #2's sustained 14-day broadband acoustic rise (+3.6 dB in the 100–200 Hz bands vs. all-time baseline) alongside its persistently low gas resistance (65 kΩ vs. all-time 144 kΩ) and rock-steady 95.4°F (35.2°C) brood temperature forms a coherent multi-sensor signature of active honey processing — elevated fanning, concentrated volatiles from ripening, and tight thermoregulation all moving together, exactly as Southwick 1991 and Seeley 1974 predict for a colony at peak summer production.
All four hives show clear daily fanning/activity vibration rhythms (14–15 of 15 days with distinct peaks) driven by the apiary's wide outdoor swing of 69–93°F (20.6–34.1°C) under extreme ambient dryness (12–38% RH); Hive #2's compressed 1.3°F (0.7°C) and Hive #3's 2.2°F (1.2°C) brood arcs confirm deep, well-staffed brood nests, while Iris's 4.7°F (2.6°C) and Hive #1's 5.6°F (3.1°C) arcs reflect the wider thermal swing natural for colonies whose warming arc has not yet fully settled into peak brood clamping.
-
Iris healthy Score: 78/100📋 Overall Health
Your Iris hive is progressing well — the 24h average of 90.5°F (32.5°C) is +0.1°F above yesterday and continuing the gentle multi-week warming arc (weekly averages: 89.6 → 90.9 → 90.7°F), still approaching the ideal 93–97°F (34–36°C) brood band; all 10 sound bands match her all-time baseline within ±0.7 dB (avg −10.4 dBFS vs. all-time −10.3 dBFS), confirming a fully intact and active worker population. Humidity averaged 42.0%, consistent with her historical range under very dry outdoor conditions, and vibration is smooth at kurtosis 2.8 with a healthy daily fanning peak (14/15 days); gas resistance at 433 kΩ is right on her all-time average of 440 kΩ — everything here is stable, and worth a glance at brood frames on your next routine visit.
🌅 Diurnal Cycle PatternsIris shows an active 4.7°F (2.6°C) daily temperature arc (88.0–92.7°F / 31.1–33.7°C), with the outdoor phase buffered by ~90 minutes of thermal mass — a healthy damping signature, not a placement concern; the 200–260 Hz band shows the strongest diurnal rhythm (5.0 dB swing) and low-band sound energy is trending up in the second half of the window (+1.4–2.0 dB in the 100–350 Hz bands), consistent with increasing foraging/fanning activity tracking peak-day heat. The gas heater-scan dominant rhythm band shifted from the 200°C step to the 150°C step between the first and second halves of the window — the low-temperature steps are most humidity-sensitive, and this shift tracks Iris's already-noted humidity-gas coupling (r=+0.58), not a new VOC event.
🔬 Correlations & Discoveriestemperature vs humidity (14d) | r = +0.88The exceptionally strong deconfounded temp–humidity coupling (r=+0.88) in Iris reflects psychrometric physics in her arid environment: as her interior warms through the daily cycle, the same absolute water content registers as lower RH%, creating a tight inverse that the STL decomposition isolates as genuine colony physiology rather than outdoor weather. This is active hygroregulation working exactly as described by Human et al. 2006 — a flat, well-buffered moisture environment maintained against a 12–38% outdoor RH swing.📚 Reference: Eouzan et al. 2019 (PMC6368279), Human, Nicolson & Dietemann 2006, Ellis et al. 2008humidity vs gas_resistance (14d) | r = +0.58The genuine humidity–gas resistance coupling in Iris (r=+0.58) reflects the MOX sensor's well-documented water-vapor sensitivity: when humidity rises slightly (e.g. during fanning or nectar-processing cycles), adsorbed water partially blocks the SnO2 reaction sites and independently shifts resistance — meaning part of Iris's gas variation is a moisture artifact, not a new VOC chemistry event, and should always be read against her humidity channel before drawing any air-quality conclusions.📚 Reference: Burgues & Marco 2018, Sensors 18(2):339, Winston 1987▹ 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 steady warming arc both point to a colony in good stride. -
Hive #2 healthy Score: 84/100📋 Overall Health
Your Hive #2 continues as the apiary's most active colony — brood temperature is locked at a 24h average of 95.4°F (35.2°C) with a compressed 1.3°F (0.7°C) daily arc (94.7–96.0°F / 34.9–35.5°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 (+3.6 dB in the 100–200 Hz bands vs. all-time baseline, overall avg −7.7 dBFS vs. all-time −9.9 dBFS), fully consistent with sustained fanning and honey-processing activity. Humidity averaged 47.1%, healthy and within range; vibration is smooth at kurtosis 2.8 with a strong daily fanning rhythm (15/15 days, baseline ~12.2 mG peaking to ~50.2 mG); gas resistance at 65 kΩ remains well below its all-time average of 144 kΩ — with brood temperature and acoustics fully intact, this sustained low-resistance signature reflects an ongoing honey-ripening VOC load, not any cause for concern.
🌅 Diurnal Cycle PatternsHive #2's brood arc is the tightest in the apiary at 1.3°F (0.7°C), a textbook signature of a densely staffed brood nest with strong thermoregulatory capacity; the dominant sound rhythm band shifted from 100–150 Hz to 200–260 Hz between the first and second halves of the window, and the 350–420 Hz band is strengthening (1.3 → 3.4 dB rhythm amplitude) — all within the fanning/colony-hum complex, consistent with increasing mid-frequency activity as honey processing intensifies. The gas heater-scan dominant rhythm band shifted from 100°C to 200°C, with large declines at the low-temperature steps (100°C −55%, 150°C −49%, 200°C −45%) — given that low-temperature MOX steps are most humidity-sensitive and the changepoint analysis places the resistance step-down on July 28, this shape shift is consistent with a sustained processing cycle rather than a new acute event; temperature and acoustics remain fully intact.
🔬 Correlations & Discoveriestemperature vs sound_spectrum_100_260hz (14d) | r = +0.71The deconfounded temp–humidity coupling (r=+0.71) and the 14-day spectral shift toward lower frequencies (100–260 Hz +5.4 dB) together form a coherent active-processing signature: higher sustained brood temperature drives increased fanning, fanning generates the 100–260 Hz acoustic energy rise, and concentrated volatiles from ripening honey suppress gas resistance — all three channels moving in lockstep as expected during peak-summer honey curing (Southwick 1991; Seeley 1974).📚 Reference: Seeley & Tautz 2001, Southwick 1991, Ramsey et al. 2020gas_resistance vs temperature (14d) | r = +0.67The strong deconfounded gas resistance–temperature coupling (r=+0.67) in Hive #2, anchored by the July 28 changepoint, reflects a colony-metabolic step-up: warmer, more active conditions concentrate and circulate hive volatiles (honey alcohols, brood pheromones, propolis terpenes), depressing MOX resistance — a well-established benign summer-processing pattern rather than any environmental or pathological event.📚 Reference: Burgues & Marco 2018, Sensors 18(2):339, Owens 1971, USDA Tech. Bull. 1429▹ 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 evolving heater-scan shape strongly suggest an active 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 ±0.4 dB (avg −16.2 dBFS vs. all-time −16.4 dBFS), confirming the worker population is fully intact; the 24h average of 87.8°F (31.0°C) is −1.1°F (−0.6°C) below the all-time average of 88.9°F (31.6°C), continuing a gentle 14-day cooling drift of −1.9°F (−1.1°C) that, with acoustics perfectly stable and vibration kurtosis a smooth 2.6, most likely reflects a natural late-summer brood lull or a slightly smaller active brood patch — the intact colony hum rules out any population loss. Humidity averaged 36.9%, somewhat below its all-time average of 42.2% but fully explained by the apiary's extreme ambient dryness (11.8–38.5% outdoor RH); gas resistance at 443 kΩ is close to its all-time average of 411 kΩ, and vibration shows a healthy daily rhythm (15/15 days, baseline ~15.8 mG peaking to ~25.9 mG) — watch for whether this cooling drift continues or stabilizes over the next week.
🌅 Diurnal Cycle PatternsHive #1 shows a 5.6°F (3.1°C) daily temperature arc (84.6–90.2°F / 29.2–32.4°C), the widest in the apiary, consistent with a slightly less densely packed brood zone compared to Hive #2 and #3; this wider arc under peak August heat is expected physics for a colony holding a cooler core, and with no corresponding acoustic change it is not a distress signal. The gas heater-scan shows a dominant rhythm band shift from 150°C to 100°C with rising low-step amplitudes (100°C +27%, 150°C +24%, 200°C +21%) and strengthening rhythm at 100°C and 300°C — these low-temperature step changes co-vary with the partial correlation between gas resistance and in-hive temperature (r=−0.60 controlling for outdoor weather), suggesting the daytime warm cycle is driving mild VOC concentration increases, consistent with normal late-summer foraging and propolis activity.
🔬 Correlations & Discoveriestemperature vs humidity (14d) | r = +0.85The strong deconfounded temp–humidity coupling (r=+0.85, partial r=+0.58 controlling for outdoor weather) in Hive #1 is genuine hive-specific physiology: as the colony heats and cools across its 5.6°F daily arc, in-hive absolute moisture content stays relatively stable while the RH% rises and falls with temperature through psychrometric inversion — active hygroregulation maintaining a buffered moisture environment against extreme external dryness.📚 Reference: Eouzan et al. 2019 (PMC6368279), Human, Nicolson & Dietemann 2006gas_resistance vs temperature (14d) | r = -0.6The partial gas resistance–temperature anticorrelation (r=−0.60, controlling for outdoor weather) shows that when Hive #1 warms above its own mean, gas resistance drops — rising temperatures concentrate and circulate hive VOCs (propolis terpenes, brood pheromones, honey esters), reducing MOX resistance in a well-documented benign metabolic coupling that strengthens with the late-summer heat cycle.📚 Reference: Burgues & Marco 2018, Sensors 18(2):339, Seeley 1985▹ Action: On your next routine visit, check the brood frames in Hive #1 — the stable acoustics confirm a fully present population, and a quick look at eggs and laying pattern will clarify whether the gentle 14-day cooling drift reflects a natural August brood lull or a queen in a brief laying pause. -
Hive #3 healthy Score: 94/100📋 Overall Health
Your Hive #3 remains the apiary's standout performer — brood temperature averaged 93.4°F (34.1°C) with a textbook 2.2°F (1.2°C) daily arc (92.6–94.8°F / 33.6–34.9°C), exactly matching the 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 ±0.2 dB (avg −16.3 dBFS vs. all-time −16.3 dBFS — a perfect match for the seventh consecutive report), with humidity averaging 48.2% in the healthy range. Vibration at 20.8 mG avg with smooth kurtosis 2.6 is right on its all-time average of 20.9 mG; gas resistance at 94 kΩ is near its all-time average of 101 kΩ, and with temperature and acoustics perfectly intact this reflects normal late-summer honey-processing VOC activity — everything here continues to run beautifully.
🌅 Diurnal Cycle PatternsHive #3 shows a 2.2°F (1.2°C) daily temperature arc — the second-tightest in the apiary after Hive #2 — with near-zero per-band sound deltas (all within ±0.2 dB of baseline) and no strong per-band daily sound rhythm, indicating an exceptionally stable acoustic environment; vibration shows a healthy daily rhythm (15/15 days, baseline ~19.5 mG peaking to ~32.7 mG) with the strongest rhythm in the 5–20 Hz band (3.0 dB), consistent with DVAV and waggle-dance body oscillation activity typical of a productive late-summer foraging colony. The gas heater-scan shows no strong per-band daily rhythm (max 300°C step +9% swing), the flattest gas profile in the apiary — combined with the outdoor humidity decoupling (deconfounded r=+0.01), this colony is maintaining an unusually self-contained and stable internal environment.
🔬 Correlations & Discoveriestemperature vs humidity (14d) | r = +0.62Hive #3's deconfounded temp–humidity coupling (r=+0.62, partial r=+0.34) is the weakest of the four hives, reflecting the tightest brood-area hygroregulation in the apiary — the colony is so effectively buffering its internal moisture against the extreme outdoor dryness (12–38% RH) that temperature and humidity move only weakly together even after removing the diurnal cycle, consistent with a large, well-staffed colony maintaining near-independent microclimate control (Eouzan et al. 2019; Human et al. 2006).📚 Reference: Eouzan et al. 2019 (PMC6368279), Human, Nicolson & Dietemann 2006, Ellis et al. 2008temperature vs gas_resistance (14d) | r = +0.43The modest deconfounded temp–gas resistance coupling (r=+0.43) in Hive #3, with no strong daily gas rhythm, indicates that VOC fluctuations here are primarily driven by metabolic activity scaling with brood temperature rather than by acute processing events — the flattest and most stable gas fingerprint in the apiary, consistent with a well-regulated colony at a steady late-summer production plateau.📚 Reference: Seeley 1974, Burgues & Marco 2018, Sensors 18(2):339▹ Action: On your next routine visit, note the fill level and capping progress of supers in Hive #3 — the continued acoustic stability and steady gas fingerprint suggest honey curing may be at a mature stage, and a super observation will anchor this multi-week trend to your season records.