As of July 27, 2026, all four hives are handling the July heat wave in good shape — outdoor temps reached 101°F (38.3°C) at a bone-dry 28% RH, yet Hive #2 and Hive #3 maintain exceptional brood clamping, Hive #1 continues its steady 14-day warming arc, and Iris shows rising acoustic energy alongside gas resistance back at her all-time baseline of 421 kΩ.
The outdoor hub's gas resistance of 574 kΩ — the cleanest ambient air reading in weeks — confirms no regional smoke or spray events are confounding in-hive VOC readings, making the sustained low gas resistance in Hive #2 and Hive #3 a genuine intra-hive signature, most consistent with active honey ripening and brood pheromone production through peak July heat.
All four hives show the apiary's characteristic daily fanning-vibration rhythm (15/15 days with clear peaks) synchronized with the 69.8–101°F (21–38.3°C) outdoor thermal cycle; Hive #2 and Hive #3 lead in brood-core clamping with sub-2°F daily oscillations, while Iris and Hive #1 ride wider but biologically normal 3.5–5°F arcs consistent with their respective colony-cycle positions.
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Iris healthy Score: 80/100📋 Overall Health
Your Iris hive continues a positive trajectory — brood temperature averaged 91.9°F (33.3°C) with a 3.5°F (1.9°C) daily arc and a peak of 93.7°F (34.3°C), closing in on the ideal 93–97°F (34–36°C) band (+1.9°F / +1.1°C above her all-time avg of 90.0°F / 32.2°C); gas resistance has returned exactly to her all-time baseline at 421 kΩ (vs. avg 421 kΩ), and sound energy averaged −9.4 dBFS with a rising 14-day trend (+1.7 dBFS over 14 days) — all three primary indicators moving in the right direction. Humidity at 49.6% avg sits just below the 50–70% optimal zone, consistent with the bone-dry 28% outdoor RH ventilating through the hive and not a colony concern; vibration is calm at 17.7 mG avg with kurtosis 2.8 (smooth, organized activity) and dominant peak at 111 Hz confirming healthy fanning, both matching her all-time averages precisely. Watch for brood temperature continuing its arc into the core of the ideal band over the coming days.
🌅 Diurnal Cycle PatternsIris shows a clear 24h thermal arc from 90.2°F (32.4°C) to 93.7°F (34.3°C) — a 3.5°F (1.9°C) peak-to-trough swing well within the healthy-brood threshold, with the colony tracking the outdoor thermal cycle only through the shared diurnal phase (deconfounded r=+0.11), confirming genuine thermal-mass buffering rather than any placement issue. The 14-day low-frequency acoustic shift (+3.6 dB in 100–260 Hz over 14 days) reflects increasing buzz/fanning activity consistent with syrup-processing or nectar-ripening; the 200–260 Hz and 260–350 Hz bands are trending up in the second half of the day (+1.7 dB and +2.2 dB respectively), still well within foraging/waggle-dance recruitment signatures and showing no queen-piping pattern. Vibration peaks daily at ~34.5 mG (2.1× baseline) on a consistent 15/15-day fanning schedule; the gas heater-scan shows the strongest daily rhythm at 100°C (±24% swing across 8/10 steps), a normal pattern where heavier volatiles fluctuate most through the day.
🔬 Correlations & Discoveriestemperature vs gas_resistance (14d) | r = -0.44A genuine deconfounded inverse coupling (r=−0.44, partial r=−0.33 controlling for outdoor temp) between brood temperature and gas resistance in Iris reflects the classic fanning-VOC feedback: as the colony heats up and deploys fanning workers, circulating air concentrates hive volatiles (brood pheromones, honey esters, propolis terpenes) and reduces MOX resistance — a healthy metabolic signature, not a stress signal, especially now that gas resistance has returned to Iris's all-time baseline of 421 kΩ.📚 Reference: Seeley 1985 & 1995, Human et al. 2006, Stabentheiner et al. 2010vibration_rms vs vibration_kurtosis (14d) | r = +0.52The positive coupling between vibration RMS and kurtosis (r=+0.52) in Iris indicates that her activity bursts — when vibration amplitude rises during peak fanning — also become slightly more impulsive in character; this is consistent with the mechanical signature of fanning bouts and periodic buzz-run activity, with kurtosis holding a healthy 2.8 (well below the 5.0 impulsive-event threshold), confirming no disturbance events are driving the relationship.📚 Reference: Ramsey et al. 2020, Nieh & Tautz 2000▹ Action: On your next routine visit within 5–7 days, confirm fresh eggs and a solid brood pattern in Iris — her temperature is climbing toward the ideal band, gas resistance is back at baseline, and the 14-day acoustic rising trend all point to a colony in full stride. -
Hive #2 healthy Score: 85/100📋 Overall Health
Your Hive #2 delivers another standout brood-thermoregulation report — temperature locked at 95.1°F (35.1°C) avg with only a 1.8°F (1.0°C) daily oscillation, firmly in the ideal 93–97°F (34–36°C) zone and +0.4°F (+0.2°C) above the all-time avg of 94.7°F (34.8°C); all 10 sound bands match baseline within ±1.7 dB (avg −10.7 dBFS vs. all-time −10.4 dBFS), and humidity averaged 53.3% — solidly in the 50–70% optimal zone. Vibration at 14.3 mG avg with kurtosis 2.8 and dominant peak at 117 Hz confirms healthy organized fanning; gas resistance at 116 kΩ remains below the all-time avg of 305 kΩ, but with temperature, humidity, and acoustics all fully intact this continues to read as the expected peak-July honey-ripening and brood-pheromone VOC signature noted since mid-July. Watch for the gas heater-scan low-temperature steps (100–200°C) whose daily rhythm amplitude has been weakening — a subtle shift in volatile mix worth noting on your next super check.
🌅 Diurnal Cycle PatternsHive #2 shows textbook brood clamping — a 1.8°F (1.0°C) peak-to-trough daily arc holding at 94.0–95.8°F (34.4–35.5°C) with outdoor temps swinging 31°F (17°C), a clear sign of a strong, well-populated colony actively defending its brood setpoint. The gas heater-scan shows 10/10 steps with daily rhythms and the strongest cycle at 100°C (±109% swing), but the 100–200°C band amplitudes have been weakening over the past week (100°C: −62%, 150°C: −59%, 200°C: −53%), suggesting a gradual shift away from heavier, cooler-plate volatiles — consistent with honey ripening progressing and the mix of evaporated compounds evolving as water content drops. The dominant sound rhythm shifted from 100–150 Hz to 150–200 Hz between the first and second half of the window — a subtle low-band evolution worth watching but well within normal fanning/recruitment variation; vibration daily peaks reach 48.8 mG (4.0× baseline) on a consistent 15/15-day schedule, the most vigorous fanning rhythm in the apiary.
🔬 Correlations & Discoveriesgas_resistance vs battery (14d) | r = +0.41The positive deconfounded coupling between gas resistance and battery voltage (r=+0.41) in Hive #2 most likely reflects a shared thermal driver: warmer periods discharge the battery slightly faster (higher solar charging headroom consumed, higher sensor power draw) while also driving more fanning activity that circulates VOCs and lowers gas resistance — so both channels respond to the same thermal forcing in opposite directions, producing a positive correlation between resistance (rising when cooler/quiet) and battery (higher when cooler/less discharge).📚 Reference: Bosch Sensortec BME688 datasheet, Seeley 1985 & 1995▹ Action: On your next routine visit within 5–7 days, check the fill level of supers in Hive #2 — the sustained low gas resistance alongside exceptional brood clamping makes active honey ripening the most compelling explanation, and a super check will anchor the multi-week VOC trend to physical reality. -
Hive #1 healthy Score: 84/100📋 Overall Health
Your Hive #1 delivers its fourteenth consecutive report of acoustically perfect stability — all 10 sound bands match their all-time baseline within ±0.1 dB (avg −16.4 dBFS, a perfect match for the all-time avg of −16.4 dBFS), confirming a fully intact and active worker population; temperature averaged 90.4°F (32.4°C) with a 5.2°F (2.9°C) daily arc and a 14-day warming drift of +2.2°F (+1.2°C), and humidity averaged 44.9% — the driest of the four hives, consistent with dry July ambient at 28% RH ventilating through the colony and within Hive #1's historically observed range. Vibration at 16.5 mG avg with kurtosis 2.6 (smooth, well-organized activity) and dominant peak at 108 Hz confirms healthy fanning; gas resistance at 344 kΩ is near the all-time avg of 388 kΩ (−11%), well within normal variation, and the battery is excellent at 4,212 mV. Watch for temperature — currently about 1.6°F (0.9°C) below the ideal 93–97°F (34–36°C) band — continuing its steady 14-day upward trajectory.
🌅 Diurnal Cycle PatternsHive #1 shows a 5.2°F (2.9°C) peak-to-trough daily arc (87.5–92.7°F / 30.9–33.7°C), slightly wider than Hive #2 and Hive #3 but consistent with a colony whose brood volume is still building toward peak summer density; the 14-day warming trend (+2.2°F / +1.2°C) suggests the brood nest is expanding and thermal regulation is progressively tightening. Per-band sound rhythms are notably flat (max 600–800 Hz at only 1.0 dB daily swing), indicating very stable, consistent colony acoustic output without pronounced daily foraging surges — a sign of steady, well-paced activity; vibration peaks daily at ~26.0 mG (1.6× baseline) on a consistent 15/15-day schedule. The gas heater-scan dominant rhythm shifted from the 150°C step to the 200°C step between the first and second half of the window, a subtle mid-band VOC evolution consistent with changing nectar/propolis volatile composition as July progresses.
🔬 Correlations & Discoveriestemperature vs gas_resistance (14d) | r = -0.79Hive #1 shows the strongest temperature–gas coupling in the apiary (r=−0.79, partial r=−0.72 controlling for outdoor temp) — a genuinely hive-specific relationship where warmer brood-nest periods drive more fanning, which circulates and concentrates hive VOCs (E-β-ocimene brood pheromone, wax esters, propolis terpenes) and reduces MOX resistance; the partial correlation confirming this holds independent of outdoor temperature makes it a real metabolic coupling, not an ambient artifact, and is a healthy sign of an active, thermoregulating colony.📚 Reference: Seeley 1985 & 1995, Human et al. 2006, Stabentheiner et al. 2010, Maisonnasse et al. 2010▹ Action: On your next routine visit within 5–7 days, take a look at the brood frames in Hive #1 — fourteen consecutive perfectly stable acoustic reports are strongly reassuring, and a visual confirmation that the queen is laying solidly through the July heat will complete the picture as temperature continues its warming arc toward the ideal band. -
Hive #3 healthy Score: 93/100📋 Overall Health
Your Hive #3 remains the apiary's standout performer — brood temperature locked at 94.0°F (34.5°C) avg with an exceptional 1.4°F (0.8°C) daily oscillation (all-time avg 93.5°F / 34.2°C, +0.5°F / +0.3°C above baseline, firmly in the ideal 93–97°F / 34–36°C zone), and all 10 sound bands match their all-time baseline within ±0.1 dB (avg −16.3 dBFS vs. all-time −16.3 dBFS, a perfect match); humidity averaged 53.3% — the most stable and optimal in the apiary, solidly in the 50–70% zone. Vibration at 20.6 mG avg with kurtosis 2.9 reflects exceptionally smooth, organized colony activity; gas resistance at 97 kΩ remains in the step-change territory confirmed since July 17 (−129 kΩ shift), but with temperature, humidity, and acoustics all fully stable this continues to read as sustained peak honey-ripening or brood-pheromone production — note the low-temperature heater-scan steps (100–200°C) are rising (+20%, +16%, +13%), suggesting the volatile mix is evolving. Watch for a gradual gas resistance rebound as the summer honey-curing cycle eases.
🌅 Diurnal Cycle PatternsHive #3 shows the tightest brood clamping in the apiary — a 1.4°F (0.8°C) peak-to-trough daily arc holding at 93.6–95.0°F (34.2–35.0°C) while outdoor temps swing 31°F (17°C), a textbook thermoregulation signature. The vibration dominant rhythm band shifted from 50–80 Hz to 5–20 Hz between the first and second half of the window — a subtle structural-mechanical shift worth noting, though with kurtosis at 2.9 and no corroborating acoustic or temperature anomaly this likely reflects a change in the colony's low-frequency metabolic hum rather than an external disturbance. Vibration peaks daily at ~35.4 mG (1.8× baseline) on a consistent 15/15-day schedule; the gas heater-scan shows 9/10 steps with daily rhythms with the strongest cycle at 150°C (±24% swing), and the rising energy in the low-temperature steps (100–200°C) over the past week points to an increasing contribution of heavier, less-reactive volatiles — consistent with a honey super filling with partially-cured nectar.
🔬 Correlations & Discoveriestemperature vs humidity (14d) | r = -0.73The strong inverse coupling between brood temperature and in-hive humidity (r=−0.73, partial r=−0.35 controlling for outdoor temp) in Hive #3 is a textbook psychrometric signature: as the brood nest warms toward its 35°C setpoint, the same absolute water content in the air registers as lower RH% — so temperature and RH move in opposite directions without any real drying event; this tight coupling confirms excellent brood-core homeostasis, not dehydration.📚 Reference: Eouzan et al. 2019, Human et al. 2006, Ellis et al. 2010humidity vs vibration_rms (14d) | r = +0.44The positive deconfounded coupling between in-hive humidity and vibration (r=+0.44) in Hive #3 reflects the evaporative-cooling feedback: during peak heat, water-carrier bees raise in-hive humidity while fanning workers simultaneously increase vibration amplitude — both responses to the same thermal load, consistent with a large, well-organized colony deploying its full thermoregulatory toolkit through the July heat wave.📚 Reference: Ellis et al. 2008, Stabentheiner et al. 2010, Human et al. 2006outdoor_temperature vs battery (14d) | r = +0.41The positive coupling between outdoor temperature and battery voltage (r=+0.41) in Hive #3 reflects solar charging dynamics: hotter days bring stronger solar irradiance that charges the pack more effectively, so battery voltage tracks the ambient thermal cycle — a hardware-physics relationship with no colony meaning.📚 Reference: Bosch Sensortec BME688 datasheet▹ Action: On your next routine visit within 5–7 days, note the fill level of supers in Hive #3 and log it — the gas-resistance step-change since July 17 alongside exceptional brood clamping and now rising low-temperature heater-scan steps all point strongly to active honey ripening, and a super observation will anchor this multi-week VOC trend to physical reality for your season records.