March 30, 2026
🌅 Morning Cycle (09:30 MDT) — iris-20260330-0926
Observations
Mon 9:26AM: 70.4F, VPD 0.81, RH 68. Dry afternoon ahead (9% outdoor RH), cold front tonight (81→64F Tue). 100% overcast Tue. Currently mild. 7-day avg: 8h VPD stress/day on sunny dry days.
Hypothesis & Experiment
Hypothesis: Afternoon VPD spike limited by aggressive misting (engage 1.3, gap 30s). Cold front tonight drops temps — heaters cycle. Tuesday cool overcast = minimal VPD stress with moderate misting.
Test: Cold-front transition: aggressive PM misting → cold overnight prep → moderate cool-day posture. Measure Mon PM VPD peak vs 3.25 kPa yesterday, overnight heat cost, Tue VPD stress.
Expected outcome: Mon PM VPD peak <2.5 kPa. Overnight temp >58F with <$0.50 gas. Tue VPD stress <3h. Grow lights compensate overcast DLI.
Setpoint Waypoints
Monday March 30
| Time | high | low | vpd_h | hyst | d_cool | engage | all | pulse | gap | wt | Notes |
|---|
| 09:26 | 82 | 60 | 1.6 | 0.3 | 3 | 1.3 | 1.6 | 60 | 30 | 1.5 | Standard. COOL_S2 at 85°F, S3 at 87°F. |
| 19:00 | 82 | 58 | 2 | 0.3 | 3 | 1.6 | 2 | 60 | 45 | 1.5 | Standard. |
Tuesday March 31
| Time | high | low | vpd_h | hyst | d_cool | engage | all | pulse | gap | wt | Notes |
|---|
| 06:00 | 82 | 60 | 1.6 | 0.3 | 3 | 1.5 | 1.8 | 60 | 45 | 1.5 | Standard. |
Parameters changed: mister_engage_kpa,mister_all_kpa,mister_pulse_gap_s,temp_low
Outcome
⏳ Pending validation at next planning cycle.
7-Day Stress Context
| Date | Heat (h) | VPD High (h) | Cold (h) |
|---|
| 2026-03-24 | 3.6 | 8.4 | 0.0 |
| 2026-03-25 | 8.7 | 14.2 | 0.0 |
| 2026-03-26 | 3.5 | 9.9 | 0.0 |
| 2026-03-27 | 0.0 | 0.0 | 0.0 |
| 2026-03-28 | 0.6 | 3.0 | 0.0 |
| 2026-03-29 | 5.5 | 8.6 | 0.0 |
| 2026-03-30 | | | |
End-of-Day Summary
Climate
| Metric | Min | Avg | Max |
|---|
| Temperature (°F) | — | — | — |
| VPD (kPa) | — | — | — |
| Relative Humidity (%) | — | — | — |
Stress Hours
- Heat stress (>85°F): —h
- VPD stress (>2.0 kPa): —h
- Cold stress (<55°F): —h
Economics
| Electric | Gas | Water | Total |
|---|
| $— | $— | $— | $— |
Equipment Runtimes
| Equipment | Runtime |
|---|
| Fan 1 | 0 min |
| Fan 2 | 0 min |
| Vent | 60 min |
| Fog | 1 min |
| Heat 1 (electric) | 0 min |
| Heat 2 (gas) | 0 min |
| Grow lights | — min |
| Mister south | 0.00h |
| Mister west | 0.00h |
| Mister center | 0.00h |
Hourly Pattern
| Hour | Temp °F | VPD kPa | RH % |
|---|
| 12:00 | 82.1 | 1.83 | 51.4 |
| 13:00 | 83.2 | 1.86 | 52.6 |
| 14:00 | 85.4 | 2.14 | 49.3 |
| 15:00 | 89.2 | 3.10 | 35.1 |
| 16:00 | 87.7 | 3.25 | 28.0 |
| 17:00 | 80.3 | 2.30 | 35.8 |
| 18:00 | 77.4 | 1.51 | 52.4 |
| 19:00 | 72.5 | 1.60 | 41.3 |
| 20:00 | 70.7 | 0.98 | 61.9 |
| 21:00 | 69.2 | 0.77 | 68.6 |
| 22:00 | 67.8 | 0.70 | 70.1 |
| 23:00 | 67.0 | 0.64 | 71.7 |
| 00:00 | 65.7 | 0.54 | 75.0 |
| 01:00 | 64.7 | 0.51 | 75.5 |
| 02:00 | 63.7 | 0.49 | 75.7 |
| 03:00 | 63.1 | 0.45 | 77.2 |
| 04:00 | 62.2 | 0.44 | 76.9 |
| 05:00 | 61.6 | 0.42 | 77.8 |
| 06:00 | 61.1 | 0.40 | 78.2 |
| 07:00 | 62.1 | 0.45 | 76.5 |
| 08:00 | 67.6 | 0.67 | 70.9 |
| 09:00 | 72.5 | 0.94 | 65.5 |