As of July 22, 2026, your four-hive apiary is in solid mid-July form: Hive #2 and Hive #3 continue anchoring confirmed brood cores at 95.1°F (35.1°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 from last week remain: a physical brood-and-queen check for all four hives, sensor reseating in Iris and Hive #1, and stand leveling on Iris and Hive #2.
Hive #3's lifespan correlation between VibrationRMS and IAQ (r = −0.898) is a rare and ecologically meaningful signal — as fanning and foraging vibration intensity rises, gas resistance climbs (VOC load drops), consistent with increased ventilation clearing hive volatiles; the companion correlation of S_600–800Hz with IAQ (r = +0.896) further suggests that wing-beat acoustic energy at 600–800 Hz directly tracks the colony's ventilation effort and internal air quality.
Outdoor conditions deliver a robust 25.8°F (14.3°C) diurnal swing (69.3–95.1°F / 20.7–35.0°C) with humidity inversely tracking temperature (21–41%) and pressure stable (+2 Pa); Hive #2 and Hive #3 continue exemplary brood-core thermoregulation (≤1.9°F / 1.1°C and ≤1.1°F / 0.6°C daily oscillations respectively) while Iris and Hive #1 show wider 4.8°F (2.7°C) daily swings consistent with peripheral pod placement loosely coupled to ambient air.
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Iris warning Score: 55/100📋 Overall Health
Your Iris hive remains acoustically vigorous — sound averaged −10.7 dBFS (all-time avg −10.5 dBFS, within 0.2 dB, stable), confirming the full adult population is present and active; the 90.8°F (32.7°C) avg sensor temperature (+1.3°F / +0.7°C above all-time avg 89.5°F / 32.0°C) continues to reflect peripheral pod placement, as any meaningful population loss would suppress sound significantly. Humidity averaged 48.3% (range 46.7–49.9%) — holding just below the 50–70% brood-optimal zone, consistent with dry July outdoor conditions (outdoor humidity 21–41%); vibration is steady at 17.7 mG avg, kurtosis 2.5 (normal), dominant at 80–120 Hz — the broad-spectrum acoustic elevation (low bands +4–6 dB above baseline) persists and warrants verification on your next brood-and-queen check.
🌅 Diurnal Cycle PatternsIris shows an active 4.8°F (2.7°C) daily temperature oscillation (89.0–93.8°F / 31.6–34.3°C), loosely tracking outdoor ambient swings — consistent with sensor placement outside the insulated brood core rather than a thermoregulation failure, as acoustics remain fully stable. Sound trended slightly upward in the second half of the day (−11.2 → −10.2 dBFS), with low-frequency bands (100–200 Hz, +1.3–2.5 dB) and the 200–260 Hz band (+1.8 dB) rising; the gas heater-scan curve (441 kΩ at 320°C, rising to 211 kΩ at 400°C) sits about 7% below the all-time gas avg of 412 kΩ with a gently rising high-temperature tail, consistent with moderate hive VOC activity (honey ripening, propolis) — no shape shift indicating a new VOC class.
🔬 Correlations & Discoveriessound_spectrum_100_150Hz vs sound_spectrum_1500_3600Hz (lifespan) | r = +0.91The persistent broad-spectrum acoustic elevation in Iris — low bands (100–150 Hz +6.4 dB, 150–200 Hz +4.9 dB) rising in concert with high bands (1500–3600 Hz +6.3 dB, 800–1500 Hz +3.9 dB) above the all-time baseline — is consistent with elevated colony agitation or heightened communication activity rather than a single behavioral state; per Ferrari et al. 2008 and Ramsey et al. 2020, broad-spectrum elevation spanning from the colony hum zone through worker buzz frequencies warrants physical verification of brood pattern and queen status to rule out queenlessness or pre-swarm restlessness.📚 Reference: Ramsey et al. 2020, Ferrari et al. 2008⚠️ Issue: Broad-spectrum acoustic elevation persists: 100–150 Hz +6.4 dB, 1500–3600 Hz +6.3 dB, 150–200 Hz +4.9 dB, 800–1500 Hz +3.9 dB above all-time baseline — physical brood and queen verification recommended this week.⚠️ Issue: Sensor placement: avg temp 90.8°F (32.7°C) with 4.8°F (2.7°C) diurnal oscillation — reseat pod in brood core on next visit.⚠️ Issue: Humidity avg 48.3% (low 46.7%) — below the 50–70% brood-optimal range; monitor if lows approach 45%.⚠️ Issue: Tilt at 8° — above the 0–5° acceptable range; level stand on next visit.⚠️ Issue: Battery at 4066 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 warrants physical verification.▹ Action: While on-site, reseat the sensor pod firmly in the center of the brood nest frames to resolve the temperature oscillation gap.▹ Action: Level the hive stand to bring tilt from 8° toward 0–3°.▹ Action: Retrieve and recharge the battery on this visit. -
Hive #2 warning Score: 62/100📋 Overall Health
Your Hive #2 continues outstanding brood thermoregulation — temperature locked at 95.1°F (35.1°C) avg (all-time avg 94.6°F / 34.8°C, +0.5°F / +0.3°C, firmly in the ideal 93–97°F / 34–36°C zone) with only a 1.9°F (1.1°C) daily oscillation confirming the sensor is firmly in the active brood core; sound averaged −10.8 dBFS (all-time avg −9.9 dBFS, −0.9 dB), vibration at 14.1 mG avg, kurtosis 2.9 (normal), with vigorous fanning peaks to 51.4 mG confirming peak July activity. Humidity averaged 50.7% (range 47.6–54.5%) — solidly within the 50–70% optimal zone; the 14-day acoustic falling trend (−2.0 dBFS) and persistent broad-spectrum spectral elevation above baseline continue to warrant a brood check this week, though temperature and vibration remain fully stable.
🌅 Diurnal Cycle PatternsHive #2 demonstrates the apiary's tightest brood-core thermoregulation — only a 1.9°F (1.1°C) daily oscillation (93.9–96.2°F / 34.4–35.6°C) against a 25.8°F (14.3°C) outdoor swing, a textbook example of active thermal clamping (van Dooremalen et al. 2024). The 14-day acoustic trend continues a gradual fall (−2.0 dBFS from −10.2 to −12.2 dBFS) with a concurrent spectral shift away from low frequencies (100–260 Hz down −3.7 dB); gas scan at 320°C (170 kΩ) remains well below the all-time avg of 373 kΩ, and the high-temperature tail flattens near 131–143 kΩ at 350–400°C — this recurring U-shaped plateau at the high steps is consistent with peak-July honey ripening volatiles (ethanol, organic acids) dominating the scan, corroborated by stable fanning vibration peaks.
🔬 Correlations & Discoveriestemperature vs vibration_rms (14d) | r = +0.98Hive #2's brood temperature stability (≤1.9°F / 1.1°C daily oscillation) perfectly correlates with the 80–120 Hz fanning vibration signal — clear daily fanning peaks to 51.4 mG (r = +0.981, V_80_120Hz vs VibrationRMS) demonstrate the colony actively deploying wing-fanning thermoregulation to maintain the ideal brood zone, consistent with Nieh & Tautz 2000 and the B-GOOD project's finding that tight thermal clamping is the strongest single indicator of colony vitality.📚 Reference: van Dooremalen et al. 2024 (B-GOOD Project), Nieh & Tautz 2000⚠️ Issue: Broad-spectrum acoustic elevation above all-time baseline: 150–200 Hz +8.1 dB, 1500–3600 Hz +7.3 dB, 100–150 Hz +6.2 dB, 800–1500 Hz +4.7 dB — brood and queen check this week recommended.⚠️ Issue: 14-day acoustic falling trend: overall sound energy down −2.0 dBFS (from −10.2 to −12.2 dBFS); spectral energy in 100–260 Hz down −3.7 dB — worth confirming brood pattern and population on next visit.⚠️ Issue: Gas resistance at 170 kΩ is −54% below all-time avg of 373 kΩ — consistent with active honey ripening and fanning; no corroborating temp or acoustic decline, but note on next inspection.⚠️ Issue: Tilt at 9° — above the 0–5° ideal range; stand leveling recommended.▹ Action: On your next visit this week, confirm fresh eggs and solid brood pattern — the 14-day acoustic softening trend combined with persistent spectral elevation above baseline warrants a physical look, even though temperature and vibration remain fully stable.▹ Action: Level the hive stand to bring tilt from 9° toward 0–3°.▹ Action: Note the flat high-temperature gas scan tail (350–400°C plateau at 131–143 kΩ) in your inspection log as a recurring peak-July ripening signature — now in its third consecutive week, building valuable seasonal comparison context. -
Hive #1 warning Score: 60/100📋 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 89.1°F / 31.7°C, +0.4°F / +0.2°C above baseline; weekly trend 90.1→90.0→89.6→87.6°F / 32.3→32.2→32.0→30.9°C showing a continuing gradual drift) is most consistent with sensor displacement outside the brood core. Humidity averaged 42.2% (range 40.1–44.5%) — below the 50–70% optimal zone, consistent with dry July outdoor conditions; vibration is steady at 16.6 mG avg, kurtosis 2.9 (normal), dominant at 80–120 Hz — confirm brood presence and reseat the sensor pod on your next visit.
🌅 Diurnal Cycle PatternsHive #1 shows an active 4.7°F (2.6°C) daily temperature oscillation (87.2–91.8°F / 30.7–33.2°C), loosely coupling to outdoor ambient swings — consistent with peripheral pod placement rather than thermoregulation failure since acoustics are perfectly stable across all 10 bands. Vibration is steady at ~15.8 mG with no cyclic daily peaks, and the gas heater-scan curve (393 kΩ at 320°C, declining smoothly to 178 kΩ at 400°C) sits +4% above the all-time avg of 376 kΩ, with a clean monotonically decreasing shape — no shape anomaly, indicating a stable and relatively clean internal VOC environment.
🔬 Correlations & Discoveriestemperature vs sound_level (14d) | r = +0.02The near-zero correlation between Hive #1's temperature and sound level over 14 days is itself informative: temperature has drifted gradually downward (weekly avg 90.1→87.6°F / 32.3→30.9°C) while sound energy has remained perfectly flat (all bands within ±0.1 dB of baseline), which per Jones et al. 2004 and Ramsey et al. 2020 rules out population loss as the cause of the thermal drift and strongly implicates sensor displacement outside the thermoregulated brood core.📚 Reference: Jones et al. 2004, Ramsey et al. 2020⚠️ Issue: 14-day temperature cooling drift continues (weekly avg: 90.1→90.0→89.6→87.6°F / 32.3→32.2→32.0→30.9°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 42.2% (low 40.1%) — 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 at 6° — just above the ideal 0–5° range; check stand seating while reseating the sensor. -
Hive #3 healthy Score: 89/100📋 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 93.0°F / 33.9°C, +0.9°F / +0.5°C above historical mean, firmly in the ideal 93–97°F / 34–36°C zone) with only a 1.1°F (0.6°C) daily oscillation; all 10 sound bands within ±0.1 dB of their all-time baseline (sound averaging −16.4 dBFS vs. all-time avg −16.3 dBFS, near-perfect match), vibration at 21.0 mG avg, kurtosis 2.7 (calm), dominant at 80–120 Hz. Humidity averaged 52.6% (range 50.8–54.2%) — the best in the apiary and solidly within the 50–70% optimal zone; the recurring U-curve gas heater-scan fingerprint (350–375°C steps rising above the 320°C reference: 89→97 kΩ, then climbing to 115 kΩ at 400°C) continues as a consistent peak-July ripening signature — continue monitoring on your next routine visit.
🌅 Diurnal Cycle PatternsHive #3 demonstrates textbook brood-core thermoregulation — a remarkable 1.1°F (0.6°C) daily oscillation (93.4–94.4°F / 34.1–34.6°C) against a 25.8°F (14.3°C) outdoor swing, the tightest thermal clamping in the apiary for the second consecutive week. Vibration is steady at ~19.5 mG with no cyclic daily peaks, and the 10-step gas scan continues its distinctive U-curve shape (320°C reference at 98 kΩ, with 350°C at 89 kΩ dipping below, then rising to 97 and 115 kΩ at 375–400°C) — this shape, where high-temperature steps rise above the 320°C reference, is consistent with lighter reducing gases (honey ripening alcohols and organic acids) that fully combust at higher plate temperatures, a signature that has now appeared consistently for three weeks.
🔬 Correlations & Discoveriesvibration_rms vs gas_resistance (lifespan) | r = -0.898Hive #3's strong negative lifespan correlation between VibrationRMS and IAQ (r = −0.898) reveals that as colony fanning and flight vibration intensity increases, gas resistance rises (VOC load drops) — physically consistent with increased ventilation clearing volatile compounds from the hive interior; the companion correlation of S_600–800Hz with IAQ (r = +0.896) confirms that wing-beat acoustic energy at 600–800 Hz directly tracks ventilation effort, together forming a multi-sensor fingerprint of a well-regulated, actively ventilating colony (Frizzera et al. 2020; Nieh & Tautz 2000).📚 Reference: Frizzera et al. 2020, Nieh & Tautz 2000, Bosch Sensortec BME688 datasheet▹ 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 52.6% 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 rising above 320°C reference: 89→97→115 kΩ) in your inspection log — now three consecutive weeks, building valuable multi-season comparison context.▹ Action: Tilt is 2° and kurtosis is calm at 2.7 — no stand or disturbance action needed.