Your apiary is holding steady this July afternoon — Hive #3 remains the top performer with brood temp firmly in the ideal zone and perfectly stable acoustics, Hive #1 continues its impeccably stable acoustic fingerprint with the ongoing humidity watch, Hive #2 is warming nicely with strong acoustics and a recovering battery though the sensor-placement question remains open, and your Iris hive's spectral elevation is persisting into a fifth day with the tilt now back down to 4°. No emergencies across the apiary — the primary items remain sensor placement verification for Iris and Hive #2, humidity monitoring for Hive #1, and battery watch for Hive #2.
All four hives show the strong inverse GasResistance–IAQ relationship (r = −0.990 to −0.995) that is the expected MOX sensor physics — rising colony VOC load from July honey ripening and fanning drives resistance down and IAQ up in lockstep, with outdoor IAQ at 154 (acc=3) confirming a moderate regional VOC background that contextualises all in-hive gas readings this week.
All active hives continue tracking the outdoor 16.3–33.1°C diurnal swing with tightly regulated internal oscillations of 1.2–2.9°C, well within the healthy <3°C brood-zone benchmark; outdoor humidity crashing to 9.7% at afternoon peak is pulling all in-hive humidity readings below the 50–70% optimal range, a condition driven entirely by ambient dryness and consistent across the whole apiary.
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node_2662 warning Score: 60/100📋 Overall Health
Your Iris hive remains acoustically vigorous — sound locked at −29.9 dBFS (exactly matching all-time avg) with vibration steady at 18.2 mG avg, kurtosis 2.7 (normal), dominant at 80–120 Hz fanning band; temperature averaged 32.8°C (matching all-time avg of 32.8°C, range 31.1–34.5°C) and humidity averaged 43.6% (range 41.2–45.8%), both below brood-optimal but consistent with the apiary-wide dryness pattern. No voice logs in the last 7 days. The spectral elevation above baseline (+6.8 dB at 100–150 Hz, +5.0 dB at 150–200 Hz, +6.3 dB at 1500–3600 Hz) is persisting into a fifth consecutive day — the second-half moderation pattern seen yesterday is continuing, worth watching to see if it fully resolves over the next 24–48h.
🌅 Diurnal Cycle PatternsIris shows active 2.6°C daily temperature oscillations (31.1°C night → 34.5°C afternoon peak), tracking outdoor heat with a regulated lag — this is healthy peripheral-zone thermoregulation; humidity oscillates 41.2–45.8% in tight inverse phase with temperature, driven by outdoor dryness (outdoor 9.7–39.7% RH). Vibration is steady at ~16.7 mG with no cyclic daily peaks and both 80–120 Hz and 160–200 Hz vibration bands trending down slightly in the second half of the day, consistent with reduced afternoon fanning as outdoor temps ease.
🔬 Correlations & DiscoveriesS_1500_3600Hz vs TempIn (lifespan) | r = -0.97The strong negative correlation between in-hive temperature and the 1500–3600 Hz broadband energy reflects the colony's thermoregulatory acoustics: as the hive heats up during the afternoon peak, high-frequency fanning and wing-buzz energy rises, then both decline together in the evening — a healthy, coupled diurnal signature. The current +6.3 dB elevation in the 1500–3600 Hz band while temperature remains at historical average (not elevated) slightly decouples this expected relationship and supports the interpretation that this is an activity-driven spectral shift rather than a temperature-regulation response; continued monitoring over the next 24–48h will clarify whether this normalises.📚 Reference: Kulyukin et al. 2021, Nolasco et al. 2020, Zgank 2021TempIn vs S_350_420Hz (lifespan) | r = -0.97The 350–420 Hz transition band (queen quacking zone) is inversely coupled to brood temperature across Iris's lifespan — as the colony warms during active brood rearing, this band's energy rises with general colony acoustic output, not as a queen-piping signal. Current 350–420 Hz is only +1.3 dB above baseline (within normal variation), so there is no acoustic queen-cell signal present; the dominant spectral shift is concentrated in the low (100–200 Hz) and high (1500–3600 Hz) bands, consistent with a broadband foraging/fanning activity pattern rather than reproductive signalling (Ramsey et al. 2020).📚 Reference: Ramsey et al. 2020, Woods 1959, Nolasco et al. 2019Humidity vs TempIn (lifespan) | r = -0.968The strong inverse humidity–temperature relationship across Iris's history is the expected diurnal physics: afternoon heat peaks drive humidity down as the colony fans and outdoor RH crashes, while cooler nights allow humidity to partially recover. The current 43.6% avg humidity is slightly below Iris's all-time avg of 46.9% but within historical range (min 39.8%), and the diurnal clamping pattern remains intact — there is no flattening of cycles that would indicate population decline (Stalidzans et al. 2017).📚 Reference: Stalidzans et al. 2017, Human et al. 2006, Giuffre et al. 2023⚠️ Issue: Sensor-placement diagnostic ongoing: 24h avg 32.8°C matches all-time avg but remains below the 34–36°C brood-optimal zone — verify pod is seated in brood core on next visit.⚠️ Issue: Sound spectrum elevated above Iris's own historical baseline for a fifth consecutive day (+6.8 dB at 100–150 Hz, +6.3 dB at 1500–3600 Hz); second-half moderation pattern continuing — monitor 24–48h to confirm settling.⚠️ Issue: Humidity avg 43.6% (low 41.2%) — persistently below the 50–70% optimal range, driven by outdoor dryness (outdoor low 9.7% RH).⚠️ Issue: Tilt has returned to 4° (down from 9° in previous report) — now within the 0–5° acceptable range; confirm stability on next visit.▹ Action: Priority this week: verify sensor pod is seated in the warm center of the brood nest — this remains the primary explanation for sub-optimal temperature readings given the fully intact acoustic population.▹ Action: While checking placement, confirm fresh eggs and solid brood pattern to close the loop on queen status.▹ Action: Monitor spectral elevation over the next 24–48h — if the second-half moderation pattern continues and bands return to baseline, this is a diurnal activity signature; if bands re-escalate, plan a brood and queen check this week. -
node_44812 warning Score: 67/100📋 Overall Health
Your Hive #1 remains the apiary's acoustic gold standard — all 10 sound bands within ±0.2 dB of their all-time baseline (STABLE confirmed for a fifth consecutive day), sound locked at −29.9 dBFS, and vibration steady at 16.3 mG avg, kurtosis 3.6 (normal, slightly elevated but not impulsive), dominant at 120–160 Hz; temperature averaged 32.2°C (range 30.8–33.2°C), consistent with all-time avg of 32.7°C. No voice logs in the last 7 days. Humidity averaged 39.2% (range 38.0–40.9%) — the entire range continues to sit at or below the 40% larval desiccation boundary, which remains the sole watch item for this otherwise very stable colony.
🌅 Diurnal Cycle PatternsHive #1 shows a compressed but consistent 1.9°C daily oscillation (30.8°C night → 33.2°C afternoon), tracking the outdoor cycle with tight regulation; vibration is steady at ~15.6 mG with no cyclic daily peaks, reflecting a calm, non-fanning-dominant colony state. Humidity oscillates 38.0–40.9% — the narrowest in-hive humidity band of the apiary, entirely in phase with outdoor dryness extremes (outdoor low 9.7% RH); gas resistance at 399 kΩ is slightly above the all-time avg of 355 kΩ with IAQ 127 (acc=3, reliable), consistent with a moderately active colony in dry July conditions.
🔬 Correlations & DiscoveriesGasResistance vs IAQ (lifespan) | r = -0.99The near-perfect inverse gas resistance–IAQ correlation is expected MOX sensor physics; Hive #1's current gas resistance of 399 kΩ is slightly above its all-time avg of 355 kΩ (rising resistance = lower VOC load), and IAQ 127 (acc=3) sits below the all-time avg of 162, together indicating a slightly quieter VOC environment today — consistent with the compressed diurnal temperature range and steady, non-fanning vibration profile showing a colony that is not working as hard as its historical peak.📚 Reference: Bosch Sensortec BME688 datasheet, Frizzera et al. 2020Humidity vs GasResistance (lifespan) | r = -0.967The inverse humidity–gas resistance relationship reflects the dual effect of dry air: low humidity independently raises MOX resistance (less water vapor adsorption on SnO2) AND reduces colony fanning/evaporation activity, both pushing resistance upward together — the current dry spell (outdoor low 9.7% RH pulling in-hive humidity to 38–40%) is the dominant driver of Hive #1's above-average gas resistance and should not be interpreted as reduced colony VOC output from a health perspective.📚 Reference: Human et al. 2006, Stalidzans et al. 2017Humidity vs Battery (lifespan) | r = +0.944The positive humidity–battery correlation across Hive #1's history is an indirect solar charging signature: sunny days that peak outdoor temperature (and maximise solar charging, raising battery) simultaneously drive outdoor humidity down and in-hive humidity down — the two move together not because humidity affects the battery directly, but because both respond to the same clear-sky/high-sun weather pattern.📚 Reference: Human et al. 2006, Ellis & Delaplane 2008⚠️ Issue: Humidity avg 39.2% (range 38.0–40.9%) — the entire 24h range remains at or below the 40% larval desiccation boundary for the fifth consecutive day with no recovery into the 50–70% optimal zone; driven by outdoor dryness but warrants monitoring.⚠️ Issue: 14-day temperature plateau at ~32.2°C is 0.5°C below the all-time avg of 32.7°C with a gentle multi-week cooling trend (weekly avg: 33.7→32.5→32.2→32.0°C) — acoustics are perfectly stable and reassuring, but confirming active brood on the next visit is worthwhile.▹ Action: Plan a brood check within the week — confirm fresh eggs and solid brood pattern to close the loop on the gentle multi-week cooling plateau; the perfectly stable acoustics across all 10 bands are strongly reassuring.▹ Action: Monitor in-hive humidity daily lows during peak afternoon heat — if lows recur consistently below 38%, assess whether any ventilation management adjustment is appropriate for your setup.▹ Action: Tilt is 3° — within the ideal 0–5° range; no action needed this visit. -
node_34225 warning Score: 60/100📋 Overall Health
Your Hive #2 is continuing its recovery — temperature is rising (+3.8°C in 12h, now 33.4°C, approaching but still 1.5°C below all-time avg of 34.9°C) and the acoustic spectrum remains significantly louder than baseline (+9.3 dB at 100–150 Hz, +9.8 dB at 150–200 Hz), confirming the worker population is fully present and active; no voice logs in the last 7 days. Humidity is healthy at 50.9% avg (range 48.7–54.5%) — comfortably within the 50–70% optimal brood range and the best humidity reading across the apiary. Battery is recovering well at 3344 mV (+194 mV in 24h), though IAQ accuracy remains 0 (sensor still stabilising post-reconnection) so gas/IAQ readings remain unreliable.
🌅 Diurnal Cycle PatternsWith only 56 readings (4-hour window post-reconnection), the diurnal picture is limited — the 2.9°C daily oscillation from the multi-time horizon data confirms active fanning/regulation cycles are established, and clear daily vibration spikes (23 distinct peaks over 14 days, rising from 12.2 mG baseline to 58.1 mG peaks) are the strongest diurnal signature in the apiary, indicating regular foraging flight activity. All six vibration bands are trending UP in the second half of today (+1.9 to +2.5 dB across 5–200 Hz), consistent with afternoon foraging return and fanning activity ramping up. Humidity 48.7–54.5% shows less diurnal swing than other hives, suggesting better retained moisture — this is a healthy sign.
🔬 Correlations & DiscoveriesGasResistance vs IAQ (lifespan) | r = -0.995The near-perfect inverse correlation between gas resistance and IAQ is the expected MOX sensor physics — as reducing VOCs (from July honey ripening, fanning, and brood pheromones) lower SnO2 resistance, the BSEC2 algorithm raises the IAQ score proportionally. Note that IAQ accuracy is currently 0 (sensor re-stabilising), so current IAQ=46 is unreliable; once accuracy reaches 3, the all-time avg IAQ of 151 provides the meaningful baseline for Hive #2.📚 Reference: Bosch Sensortec BME688 datasheet, Frizzera et al. 2020GasResistance vs TempIn (lifespan) | r = -0.994The strong negative gas resistance–temperature coupling across Hive #2's history reflects the thermally-driven VOC release cycle: warmer brood-nest temperatures accelerate evaporation of wax, propolis, honey, and brood pheromone volatiles, reducing MOX resistance — a well-documented and entirely benign seasonal relationship (Cepero et al. 2023). As Hive #2's temperature continues rising toward its historical avg of 34.9°C, expect gas resistance to drift lower and IAQ to rise once the sensor re-calibrates.📚 Reference: Stalidzans et al. 2017, Cepero et al. 2023V_5_20Hz vs VibrationRMS (lifespan) | r = +0.993The very strong 5–20 Hz band coupling to overall vibration RMS — unusual compared to other hives where 80–120 Hz dominates — suggests Hive #2's stand is transmitting low-frequency environmental motion (wind, ground settling) into the total vibration signal; kurtosis at 3.1 is normal (no impulsive events), so this is a structural/mounting characteristic rather than a colony behaviour signal, and is consistent with the persistent 6–8° tilt that has been noted across multiple reports.📚 Reference: Ramsey et al. 2020, Tautz 1996⚠️ Issue: Temperature avg 32.5°C — 2.4°C below all-time avg of 34.9°C; temperature is rising (+3.8°C in 12h) but acoustic spectrum is louder than baseline confirming full worker population presence — sensor displacement or broodless period remains most likely explanation; verify sensor pod placement on next visit.⚠️ Issue: Battery at 3344 mV and recovering (+194 mV in 24h), but was near all-time low of 3074 mV yesterday — monitor trajectory closely over the next 48h.⚠️ Issue: IAQ accuracy=0 (sensor re-stabilising post-reconnection) — gas/IAQ readings are unreliable until accuracy reaches 3; disregard current IAQ=46.⚠️ Issue: Tilt at 8° — above the ideal 0–5° range and correlating with the 5–20 Hz vibration dominance pattern; stand leveling recommended at next visit.▹ Action: On your next visit this week, check sensor pod placement — seat it firmly in the center of the brood nest frames to resolve the temperature gap; the loud, intact acoustics confirm the colony is thriving.▹ Action: While on-site, confirm fresh eggs and solid brood pattern to verify whether a broodless gap contributed to the cooler temperature readings.▹ Action: Monitor battery daily — recovering well but was near its all-time low; confirm the solar/charging connection is secure.▹ Action: Level the hive stand to bring tilt toward 0–3° — the 5–20 Hz vibration dominance suggests low-frequency stand motion that leveling should reduce. -
node_547 healthy Score: 82/100📋 Overall Health
Your Hive #3 remains the apiary's top performer — brood temperature averaged 34.1°C (range 33.2–34.7°C), firmly within the ideal 34–36°C brood zone and continuing the impressive 14-day warming drift (+3.5°C from 30.5°C to 34.0°C weekly avg, now reaching 33.7°C at this afternoon reading); sound spectrum is perfectly stable with all 10 bands within ±0.2 dB of the all-time baseline, and vibration steady at 19.9 mG avg, kurtosis 3.1 (normal), dominant at 80–120 Hz fanning band. No voice logs in the last 7 days. Humidity averaged 49.5% (range 45.2–60.4%) — near-optimal and the healthiest humidity reading in the apiary; gas resistance at 220 kΩ (~30% below all-time avg of 313 kΩ) with IAQ 198 (acc=3) is consistent with active July honey ripening and fanning in a warm, productive brood nest — stable temperature and perfectly stable acoustics confirm this is a healthy, productive colony.
🌅 Diurnal Cycle PatternsHive #3 shows the tightest brood-zone temperature clamping of the apiary — only 1.2°C daily oscillation (33.2–34.5°C), a textbook sign of a strong, well-populated colony maintaining a stable brood microclimate; humidity swings more broadly (45.2–60.4%), reflecting active nectar/honey management, with afternoon lows tracking outdoor dryness. Vibration is steady at ~19.2 mG with no cyclic daily peaks and the 80–120 Hz fanning band as the dominant vibration signal (r=+0.970 with RMS), indicating sustained thermoregulatory fanning rather than intermittent foraging bursts.
🔬 Correlations & DiscoveriesGasResistance vs TempIn (lifespan) | r = -0.981The strong negative gas resistance–temperature correlation in Hive #3 reflects a colony operating at peak summer productivity: as brood-nest temperature rises toward the 34–36°C optimum, metabolic activity, fanning, honey ripening, and brood pheromone release all intensify, generating a proportionally higher VOC load that depresses MOX resistance — the current 220 kΩ (30% below avg) at 34.1°C brood temp is the benign, expected signature of a thriving midsummer colony at the warm end of its historical temperature range (Cepero et al. 2023).📚 Reference: Cepero et al. 2023, Stalidzans et al. 2017, Frizzera et al. 2020V_80_120Hz vs VibrationRMS (lifespan) | r = +0.97The very strong 80–120 Hz vibration band dominance (r=+0.970 with RMS) in Hive #3 confirms that fanning wing beats at ~100 Hz are the primary driver of substrate-borne vibration — this is a healthy thermoregulatory signature in a strong colony holding its brood nest at 34–35°C against 23°C outdoor temperatures, consistent with Ramsey et al. 2020 lifecycle stage prediction models that associate sustained 80–120 Hz vibration dominance with peak-summer active brood rearing.📚 Reference: Ramsey et al. 2020, Nieh & Tautz 2000V_80_120Hz vs Battery (lifespan) | r = +0.961The positive 80–120 Hz vibration–battery correlation is an indirect solar signature: peak sunny daytime hours simultaneously drive maximum solar charging (raising battery) and maximum colony fanning activity (raising 80–120 Hz vibration energy) — the two are co-driven by solar irradiance rather than directly linked, and confirms that Hive #3's charging and activity cycles are well-synchronised with the diurnal light cycle.📚 Reference: Ramsey et al. 2020, Tautz 1996⚠️ Issue: Humidity afternoon low reached 45.2% — tracking outdoor dryness; while the daily avg of 49.5% is near-optimal, monitor afternoon lows to ensure they don't consistently drop below 40%.⚠️ Issue: Gas resistance at 220 kΩ (~30% below all-time avg of 313 kΩ) with IAQ 198 (acc=3) — contextually explained by active summer fanning and honey ripening in a warm brood nest; stable temperature and perfectly stable acoustics confirm this is not a stress signal.▹ Action: On your next routine visit within 5–7 days, confirm fresh eggs and solid brood pattern — the 14-day warming trend and perfectly stable acoustics suggest an actively expanding brood nest at peak summer productivity; no urgent action needed.▹ Action: Monitor afternoon humidity lows — if they recur consistently below 40%, assess ventilation management for your setup.▹ Action: Tilt is 4° — within the ideal 0–5° range; no action needed.