Key Performance Indicators
Avg Time to -20°C
40 min
8/8 loggers (Group A)
Avg Time to -25°C
69 min
8/8 loggers
Avg Min Temp
-32.2°C
target -29°C (overshoot)
Hold ≤ -28°C
1368 min
plateau #1, unit ON (22.8 hr)
Cold Chain ≤ -20°C
5560 min
92.7 hr total
Spatial σ
2.10°C
plateau uniformity
First -20°C breach: 2026-09-26 18:00:00 (Logger 2 — Left Wall Rear)
Insight: Box nyapai target -29°C dan overshoot ke -32°C dalam
~40 menit. Perjalanan punya 2 siklus plug/unplug: unit ON sampai 26 Sep 17:25 (plateau 23 jam),
lalu OFF sampe 27 Sep 18:45, ON lagi, OFF lagi 29 Sep 15:00. Cold chain ≤-20°C bertahan
93 jam total — melampaui durasi perjalanan SBY-MKS dengan aman.
Chart 1 — All Loggers Temperature
Insight: 2 kelompok start: Group A (8 logger, 25 Sep 17:24)
dan Group B (L9/L12/L16, 26 Sep 18:29 — 25 jam lebih lambat). Group B gak pernah nyampe -29
(L12 min -27.7). Pintu dibuka 3x (merah), dan setelah Door #1 suhu naik ke -19 dan diam —
itu unit OFF.
Chart 2 — Cross-Logger Spread
Insight: Cross-logger range 2.5–3°C saat plateau #1 (bagus),
melebar jadi 8–12°C saat unit OFF (sirkulasi passive gak merata). Top Of Goods selalu paling
dingin, Mid Cabin Rear paling hangat.
Chart 3 — Per-Logger Metrics
Insight: Group B (abu-abu) jelas beda populasi: time-to-20
2200+ menit vs 40 menit Group A. Time to -25 cuma 48–78 menit untuk Group A — box dingin cepat.
Chart 4 — Spatial Map Over Time
Insight: Tekan Play. Left/Right Wall front-mid-rear, Mid Cabin
front-mid-rear, Top Of Goods di atas. Saat Door #1 (26 Sep 17:25), Mid Cabin Rear (L15) paling
cepat naik; Top Of Goods (L16) paling lambat.
Chart 5 — Door Events Zoom
Event Timeline
| Time | Event | Status |
|---|
| 09-26 17:25 | Door #1 open — sharp rise 29.7°C (MAJOR) | closed 09-26 19:45 |
| 09-29 10:45 | Door #2 open — sharp rise 4.9°C (MAJOR) | closed 09-29 12:15 |
| 10-01 08:10 | Door #3 open — sharp rise 27.2°C (MAJOR) | NO CLOSE — unit OFF |
Per-Logger Summary
| Logger | Position | Section | Slot |
Group | Min Temp | Hold ≤-28 | Cold Chain |
|---|
| L2 | Left Wall Rear | Left Wall | Rear | A | -31.3°C | 1335 min | 83 hr |
| L5 | Mid Cabin Front | Mid Cabin | Front | A | -34.0°C | 1401 min | 109 hr |
| L8 | Right Wall Front | Right Wall | Front | A | -31.7°C | 1362 min | 90 hr |
| L9 | Top Of Goods | Top Of Goods | Top | B | -28.3°C | 436 min | 72 hr |
| L11 | Mid Cabin Mid | Mid Cabin | Mid | A | -33.1°C | 1386 min | 103 hr |
| L12 | Top Of Goods | Top Of Goods | Top | B | -27.7°C | 0 min | 72 hr |
| L15 | Mid Cabin Rear | Mid Cabin | Rear | A | -32.0°C | 1368 min | 87 hr |
| L16 | Top Of Goods | Top Of Goods | Top | B | -31.9°C | 183 min | 85 hr |
| L19 | Left Wall Mid | Left Wall | Mid | A | -31.8°C | 1362 min | 88 hr |
| L20 | Right Wall Mid | Right Wall | Mid | A | -31.8°C | 1362 min | 89 hr |
| L27 | Left Wall Front | Left Wall | Front | A | -31.8°C | 1365 min | 94 hr |
Insight: Group B di-highlight (kuning di Excel, abu-abu di
chart) — di-exclude dari AVERAGE karena late-start. L21 gagal recording (17 baris) tetap
ditampilkan tapi gak dihitung.
Door #1 — 09-26 17:25 → 09-26 19:45
Cross-mean -30.7°C → -1.1°C (rise 29.7°C) · 8/11 loggers · MAJOR
| Logger | Position | Before | Peak |
After | Δ Open | Δ Recovery |
|---|
| L2 | Left Wall Rear | -30.0 | -3.5 | -17.8 | 26.6 | -14.4 |
| L5 | Mid Cabin Front | -33.0 | -11.8 | -21.4 | 21.2 | -9.5 |
| L8 | Right Wall Front | -30.5 | -7.6 | -19.3 | 22.8 | -11.6 |
| L11 | Mid Cabin Mid | -32.0 | -6.7 | -20.1 | 25.3 | -13.4 |
| L15 | Mid Cabin Rear | -30.7 | -5.0 | -18.6 | 25.7 | -13.6 |
| L19 | Left Wall Mid | -30.6 | -6.5 | -18.9 | 24.1 | -12.4 |
| L20 | Right Wall Mid | -30.5 | -5.5 | -19.0 | 25.0 | -13.4 |
| L27 | Left Wall Front | -30.7 | -8.4 | -19.1 | 22.2 | -10.7 |
| AVERAGE | 24.1°C | -12.4°C |
Insight: Bukaan penuh (loading/unloading). Setelah ini suhu stabil di ~-19°C dan gak re-freeze sampai 27 Sep 18:45 — unit dimatiin di titik ini. Top Of Goods (L16) paling protected.
Door #2 — 09-29 10:45 → 09-29 12:15
Cross-mean -29.2°C → -24.4°C (rise 4.9°C) · 9/11 loggers · MAJOR
| Logger | Position | Before | Peak |
After | Δ Open | Δ Recovery |
|---|
| L2 | Left Wall Rear | -27.3 | -18.6 | -27.0 | 8.7 | -8.4 |
| L5 | Mid Cabin Front | -32.1 | -27.2 | -31.5 | 4.9 | -4.3 |
| L8 | Right Wall Front | -29.2 | -24.0 | -28.9 | 5.2 | -4.9 |
| L9 | Top Of Goods | -27.7 | -27.7 | -27.8 | 0.0 | -0.1 |
| L11 | Mid Cabin Mid | -30.7 | -24.1 | -30.3 | 6.5 | -6.2 |
| L12 | Top Of Goods | -26.9 | -26.9 | -27.1 | 0.0 | -0.2 |
| L15 | Mid Cabin Rear | -28.9 | -20.2 | -28.4 | 8.6 | -8.1 |
| L16 | Top Of Goods | -31.1 | -29.3 | -30.9 | 1.9 | -1.6 |
| L19 | Left Wall Mid | -29.2 | -21.0 | -28.8 | 8.3 | -7.9 |
| L20 | Right Wall Mid | -28.9 | -22.0 | -28.7 | 6.9 | -6.7 |
| L27 | Left Wall Front | -29.6 | -23.8 | -29.2 | 5.8 | -5.4 |
| AVERAGE | 5.2°C | -4.9°C |
Insight: Bukaan singkat, semua logger recovery penuh. Posisi Mid Cabin & Left/Right Wall Rear (L2, L15, L19) paling kena; Top Of Goods paling kecil.
Door #3 — 10-01 08:10 → 10-01 10:30
Cross-mean -13.9°C → 13.2°C (rise 27.2°C) · 11/11 loggers · MAJOR
| Logger | Position | Before | Peak |
After | Δ Open | Δ Recovery |
|---|
| L2 | Left Wall Rear | -11.3 | 4.2 | n/a | 15.5 | n/a |
| L5 | Mid Cabin Front | -12.7 | 6.0 | n/a | 18.8 | n/a |
| L8 | Right Wall Front | -11.6 | 11.2 | n/a | 22.8 | n/a |
| L9 | Top Of Goods | -19.8 | 18.0 | n/a | 37.7 | n/a |
| L11 | Mid Cabin Mid | -12.6 | 11.1 | n/a | 23.7 | n/a |
| L12 | Top Of Goods | -21.6 | 21.2 | n/a | 42.8 | n/a |
| L15 | Mid Cabin Rear | -11.6 | 8.9 | n/a | 20.5 | n/a |
| L16 | Top Of Goods | -17.1 | 22.5 | n/a | 39.6 | n/a |
| L19 | Left Wall Mid | -12.1 | 9.5 | n/a | 21.6 | n/a |
| L20 | Right Wall Mid | -12.1 | 9.7 | n/a | 21.8 | n/a |
| L27 | Left Wall Front | -11.9 | 23.1 | n/a | 35.0 | n/a |
| AVERAGE | 27.3°C | nan°C |
Insight: Final unloading. Semua logger naik ke positif — perjalanan selesai. Unit sudah OFF sejak 29 Sep 15:00, jadi ini passive warmup + buka pintu.
Glossary
| Term | Definition |
|---|
| Logger | RC-5 temperature data logger (1-min or 3-min interval) |
| Group A / B | A = started 25 Sep 17:24 (8 loggers). B = started 26 Sep 18:29 (L9, L12, L16) — excluded from averages |
| Plug/unplug | Reefer unit ON (pull-down + plateau) / OFF (passive warmup). This run has 2 ON cycles and 2 OFF periods |
| Time to -X°C | Minutes from start until first reading ≤ -X |
| Hold ≤ -28°C | Full plateau length (target -29 + 1 tolerance) |
| Cold Chain | Total duration ≤ -20°C (BPOM frozen standard) |
| Breach | First time temp exceeds -20°C after having been below it |
| Δ Open | Peak temp inside the door window minus pre-door baseline (canonical spike formula) |
| Δ Recovery | After-close value minus Peak (negative = cooled back down) |
| Door event (detected) | Cross-mean rises ≥3°C at ≥0.30°C/min — passive warmup is only ~1°C/h, so a sharp rise can only be a door |