As of July 23, 2026, your four-hive apiary is holding well through peak July heat — Hive #2 and Hive #3 continue anchoring confirmed brood cores at 95.0°F (35.0°C) and 93.9°F (34.4°C) respectively, while Iris and Hive #1 maintain fully intact acoustics confirming complete adult populations despite their peripheral-sensor temperature signatures. The standing priorities remain: a physical brood-and-queen check with sensor reseating for Iris and Hive #1, and stand leveling on Iris and Hive #2; Hive #2's persistent 14-day acoustic softening trend and Iris's broad-spectrum elevation above baseline are the two items most deserving eyes this week.
Across the apiary, the two hives with confirmed brood-core sensor placement (Hive #2 and Hive #3) show compressed diurnal temperature oscillations of ≤1.8°F (≤1.0°C), consistent with van Dooremalen et al. 2024 findings that healthy brood nests maintain <3°F (<1.7°C) daily swings, while the two peripherally placed sensors (Iris and Hive #1) show ~4.5°F (~2.5°C) swings — a clean natural experiment in sensor placement effect visible across a single apiary.
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Iris warning Score: 57/100📋 Overall Health
Your Iris hive continues acoustically vigorous — sound averaged −10.4 dBFS (all-time avg −10.6 dBFS, within 0.2 dB, stable), confirming the full adult population is present and active; the 90.4°F (32.4°C) avg sensor temperature (all-time avg 89.7°F / 32.1°C, +0.7°F / +0.4°C above baseline) continues to reflect peripheral pod placement, and the broad-spectrum acoustic elevation (100–150 Hz +6.6 dB, 1500–3600 Hz +6.6 dB, 800–1500 Hz +4.1 dB above all-time baseline) persists unchanged from yesterday. Humidity averaged 48.4% (range 46.8–50.2%) — holding just below the 50–70% brood-optimal zone, consistent with dry July outdoor conditions (outdoor humidity 21–42%); vibration is steady at 17.6 mG avg, kurtosis 2.9 (normal), dominant at 80–120 Hz — watch for humidity lows approaching 45% and plan sensor reseating on your next visit.
🌅 Diurnal Cycle PatternsIris shows active diurnal temperature cycling averaging ±4.5°F (±2.5°C) daily — consistent with a peripherally placed pod loosely coupled to ambient air rather than a brood-core reading; 4 distinct daily vibration fanning/flight peaks are clearly resolved (baseline 16.8 mG rising to 71.4 mG peaks), confirming healthy colony rhythm. The 10-step gas heater-scan curve is broadly flat from mid to high temperatures (280–400°C steps ranging 809→211 kΩ) with a steeper drop in the low steps (100°C: 61,539 kΩ → 150°C: 12,389 kΩ → 200°C: 3,846 kΩ), a shape that has been stable for this hive — the current 320°C reference at 441 kΩ is slightly above the all-time gas avg of 413 kΩ, indicating no elevated VOC load relative to this hive's own baseline.
🔬 Correlations & DiscoveriesVibrationRMS vs V_20_50Hz vs V_50_80Hz (lifespan) | r = +0.972The near-perfect correlation between overall vibration RMS and both the 20–50 Hz and 50–80 Hz substrate bands confirms these low-frequency metabolic channels are the dominant contributors to Iris's vibrational energy budget — consistent with Ramsey et al. 2020 showing colony metabolic baseline and fanning vibrations concentrate in the 50–120 Hz range; the 4 daily fanning/flight spike cycles (rising to 71.4 mG) are cleanly resolved in these same bands, providing a reliable diurnal activity fingerprint for this colony.📚 Reference: Ramsey et al. 2020, Nieh & Tautz 2000⚠️ Issue: Broad-spectrum acoustic elevation persists: 100–150 Hz +6.6 dB, 1500–3600 Hz +6.6 dB, 800–1500 Hz +4.1 dB, 150–200 Hz +5.0 dB above all-time baseline — physical brood and queen verification recommended this week.⚠️ Issue: Sensor placement: avg temp 90.4°F (32.4°C) with ±4.5°F (±2.5°C) diurnal oscillation — reseat pod in brood core on next visit.⚠️ Issue: Humidity avg 48.4% (low 46.8%) — below the 50–70% brood-optimal range; monitor if lows approach 45%.⚠️ Issue: Tilt at 6° — above the 0–5° acceptable range; level stand on next visit.⚠️ Issue: Battery at 4072 mV (all-time low 3730 mV) — stable but retrieve and recharge on next visit.▹ Action: Priority this week: brood and queen check — confirm fresh eggs, solid brood pattern, and queen presence; the persistent broad-spectrum acoustic elevation across low and high frequency bands warrants physical verification.▹ Action: While on-site, reseat the sensor pod firmly in the center of the brood nest frames to resolve the wide temperature oscillation.▹ Action: Level the hive stand to bring tilt from 6° toward 0–3°.▹ Action: Retrieve and recharge the battery on this visit. -
Hive #2 warning Score: 60/100📋 Overall Health
Your Hive #2 continues outstanding brood thermoregulation — temperature locked at 95.0°F (35.0°C) avg (all-time avg 94.6°F / 34.8°C, +0.4°F / +0.2°C, firmly in the ideal 93–97°F / 34–36°C zone) with only a ±1.8°F (±1.0°C) daily oscillation confirming the sensor is in the active brood core; sound averaged −11.0 dBFS (all-time avg −10.0 dBFS, −1.0 dB), with the 14-day acoustic softening trend continuing (−2.5 dBFS over 14 days, from −9.7 to −12.2 dBFS) and a spectral shift away from low frequencies (100–260 Hz down −5.3 dB over 14 days). Humidity averaged 50.5% (range 48.1–52.8%) — solidly within the 50–70% optimal zone; vibration at 13.7 mG avg, kurtosis 3.2 (normal), with vigorous daily fanning peaks to 102.1 mG confirming peak July activity — plan a brood check this week to verify population trend.
🌅 Diurnal Cycle PatternsHive #2 shows compressed ±1.8°F (±1.0°C) daily temperature oscillation — exemplary brood-core thermoregulation tracking the 14-day warming drift from 90.3°F (32.4°C) to 95.0°F (35.0°C) as peak July heat builds; 26 distinct daily vibration fanning/flight peaks are resolved over 14 days (baseline 12.2 mG to 102.1 mG peaks), the most vigorous fanning signature in the apiary. The 10-step gas heater-scan curve shows a pronounced flat-tail plateau at the high-temperature steps (350°C: 126 kΩ ≈ 375°C: 126 kΩ, then a slight uptick to 400°C: 137 kΩ), while the mid-steps remain low (320°C: 163 kΩ vs. all-time gas avg 361 kΩ) — this persistently suppressed mid-step resistance with a flat high-step tail continues as the established peak-July honey-ripening and fanning VOC fingerprint for this hive, now in its fourth consecutive week.
🔬 Correlations & Discoveriestemperature vs sound_level vs vibration_rms (14d) | r = -0.85Hive #2's 14-day warming drift (+4.7°F / +2.6°C) coincides with a gradual acoustic energy decline (−2.5 dBFS) concentrated in the low-frequency 100–260 Hz bands (−5.3 dB), while vibration and brood temperature remain robust — per Ferrari et al. 2008, shifts in low-frequency spectral energy can reflect changes in colony communication patterns or forager population composition, and warrant a physical brood check to confirm the population trend is not masking a subtle queen-state change.📚 Reference: van Dooremalen et al. 2024, Ramsey et al. 2020, Ferrari et al. 2008⚠️ Issue: 14-day acoustic softening trend continues: overall sound energy down −2.5 dBFS (from −9.7 to −12.2 dBFS); 100–260 Hz bands down −5.3 dB — brood and queen check this week recommended to confirm population trend.⚠️ Issue: Broad-spectrum acoustic elevation above all-time baseline: 150–200 Hz +7.5 dB, 1500–3600 Hz +6.9 dB, 100–150 Hz +6.0 dB, 800–1500 Hz +4.5 dB — confirm on physical inspection.⚠️ Issue: Gas resistance at 160 kΩ (320°C ref) is −56% below all-time avg of 361 kΩ — consistent with active honey ripening and fanning; no corroborating temp or acoustic decline, but note on next inspection.⚠️ Issue: Tilt at 8° — above the 0–5° ideal range; stand leveling recommended.▹ Action: Plan a brood check this week — confirm fresh eggs and solid brood pattern; the 14-day acoustic softening trend in the low-frequency bands (100–260 Hz) combined with persistent spectral elevation above baseline warrants a physical look, even though brood temperature and vibration remain fully stable.▹ Action: Level the hive stand to bring tilt from 8° toward 0–3°.▹ Action: Note the flat high-temperature gas scan tail (350–400°C plateau at 126–137 kΩ) in your inspection log as the recurring peak-July ripening signature — now in its fourth consecutive week, building valuable multi-season comparison context. -
Hive #1 warning Score: 62/100📋 Overall Health
Your Hive #1 remains acoustically pristine — all 10 sound bands within ±0.1 dB of their all-time baseline (sound averaging −16.4 dBFS vs. all-time avg −16.4 dBFS, perfect match), confirming the adult bee population is fully intact and active; the 89.5°F (32.0°C) avg sensor temperature (all-time avg 89.2°F / 31.8°C, +0.3°F / +0.2°C above baseline; 14-day warming drift of +2.1°F / +1.2°C from 89.5°F / 32.0°C to 91.6°F / 33.1°C) is most consistent with sensor displacement outside the brood core. Humidity averaged 42.3% (range 40.6–44.2%) — below the 50–70% optimal zone, consistent with dry July outdoor conditions; vibration is steady at 16.7 mG avg, kurtosis 2.6 (normal), dominant at 80–120 Hz — confirm brood presence and reseat the sensor pod on your next visit.
🌅 Diurnal Cycle PatternsHive #1 shows active ±4.5°F (±2.5°C) daily temperature oscillation — consistent with peripheral pod placement loosely coupled to ambient air; vibration is flat around 15.8 mG with no resolved daily fanning peaks, suggesting the pod may be isolated from the main vibration-conducting frame structure. The 10-step gas heater-scan curve shows a smooth monotonic decline from low to high plate temperatures (100°C: 39,903 kΩ down to 400°C: 178 kΩ) with the 320°C reference at 384 kΩ sitting right at this hive's all-time gas avg of 378 kΩ — the scan shape and magnitude are stable, indicating no meaningful change in the colony's VOC environment.
🔬 Correlations & Discoveriestemperature vs sound_spectrum (14d) | r = +0.0Hive #1's continued 14-day temperature warming drift (+2.1°F / +1.2°C) with perfectly stable acoustics (all 10 bands within ±0.1 dB of baseline) is the defining diagnostic signature of sensor displacement rather than any colony event — per van Dooremalen et al. 2024, a genuine population loss or brood reduction would suppress sound energy significantly, yet Hive #1's acoustic fingerprint is unchanged, confirming the full worker population is present and the thermal drift is positional artifact.📚 Reference: van Dooremalen et al. 2024, Ramsey et al. 2020⚠️ Issue: 14-day temperature warming drift continues (weekly avg: 90.1→89.6→87.8°F / 32.3→32.0→30.9°C, now current 24h avg 89.5°F / 32.0°C) — perfectly stable acoustics across all 10 bands confirms population intact; sensor displacement remains the most likely explanation; confirm brood presence and reseat pod on next visit.⚠️ Issue: Humidity avg 42.3% (low 40.6%) — below the 50–70% brood-optimal range; monitor if lows approach 40%.▹ Action: Plan a brood check within the week — confirm fresh eggs and solid brood pattern, and reseat the sensor pod in the brood nest center; perfectly stable acoustics across all 10 bands strongly indicate positional drift rather than any colony issue.▹ Action: Monitor humidity lows — if they consistently approach 40%, note whether any ventilation adjustment is warranted.▹ Action: Tilt is now at 2° — within the ideal 0–5° range, no stand action needed. -
Hive #3 healthy Score: 90/100📋 Overall Health
Your Hive #3 continues as the apiary's standout performer — brood temperature locked at 93.9°F (34.4°C) avg (all-time avg 93.1°F / 34.0°C, +0.8°F / +0.4°C above historical mean, firmly in the ideal 93–97°F / 34–36°C zone) with only a ±1.0°F (±0.6°C) daily oscillation; all 10 sound bands within ±0.1 dB of their all-time baseline (sound averaging −16.3 dBFS vs. all-time avg −16.4 dBFS, near-perfect match), vibration at 20.8 mG avg, kurtosis 2.8 (calm), dominant at 80–120 Hz. Humidity averaged 52.1% (range 51.0–53.3%) — the best in the apiary and solidly within the 50–70% optimal zone; the recurring U-curve gas heater-scan fingerprint (350°C: 89 kΩ dipping below 320°C: 97 kΩ, then recovering to 375°C: 97 kΩ and climbing to 400°C: 115 kΩ) continues as a consistent peak-July ripening signature — continue monitoring on your next routine visit.
🌅 Diurnal Cycle PatternsHive #3 shows the tightest brood-core thermoregulation in the apiary — ±1.0°F (±0.6°C) daily oscillation with a 7-day stable temperature trend; vibration is steady around 19.6 mG with no resolved daily fanning spikes, consistent with a well-insulated central placement where substrate vibration is more uniform. The 10-step gas heater-scan U-curve shape (minimum at 350°C: 89 kΩ, recovering to 115 kΩ at 400°C) is now its fourth consecutive week as this hive's established July fingerprint — the 320°C reference at 97 kΩ remains well below this hive's all-time gas avg of 214 kΩ, consistent with sustained honey-ripening VOC activity, with no corroborating temperature or acoustic changes to elevate concern.
🔬 Correlations & DiscoveriesVibrationRMS vs IAQ vs S_600_800Hz (lifespan) | r = -0.898The strong negative correlation between VibrationRMS and IAQ (r = −0.898) in Hive #3 — where higher vibration activity corresponds to lower IAQ (higher gas resistance / lower VOC load) — likely reflects the inverse relationship between active fanning behavior and hive air chemistry: when bees fan vigorously, they ventilate the hive and dilute VOC concentrations, reducing the IAQ index; this is corroborated by the positive S_600_800Hz vs. IAQ correlation (r = +0.895), where higher wing-buzz acoustic energy accompanies higher IAQ, consistent with Seeley & Tautz 2001 on fanning-driven ventilation dynamics.📚 Reference: Ramsey et al. 2020, Frizzera et al. 2020, Seeley & Tautz 2001▹ Action: On your next routine visit within 5–7 days, confirm fresh eggs and solid brood pattern — the stable 93.9°F (34.4°C) brood temp, perfectly stable acoustics, and optimal 52.1% humidity all indicate a colony at peak July health; no urgent action needed.▹ Action: Note the recurring U-curve gas heater-scan fingerprint (350–400°C steps: 89→97→115 kΩ) in your inspection log — now four consecutive weeks, building valuable multi-season comparison context.▹ Action: Tilt is 4° and kurtosis is calm at 2.8 — no stand or disturbance action needed.