{"response":"Think of a **Z-Score** as a way to measure how \"normal\" or \"weird\" a current reading is compared to the average behavior of your refrigerator.\n\nIn simple terms:\n*   **Z-Score = 0:** The reading is exactly average.\n*   **Positive Z-Score:** The reading is higher than average.\n*   **Negative Z-Score:** The reading is lower than average.\n\n### How it applies to your Refrigerator:\nWe look at your **Power usage**, which averages **570.57W**. \n\nIf your refrigerator suddenly jumps to **2,562.4W** (your recorded maximum), the Z-Score would be very high. This tells us that the reading is a significant \"outlier\"\u2014it\u2019s far outside the normal operating range. \n\n**Why this matters for your restaurant:**\n1.  **Maintenance:** If the Z-Score for your power consumption stays high for a long time, it suggests the compressor is working too hard, which might signal a mechanical fault or a refrigerant leak.\n2.  **Efficiency:** It helps distinguish between standard cooling cycles and abnormal spikes that could be driving up your costs (at 110 PKR\/kWh).\n3.  **Safety:** We use Z-Scores to detect \"Overload\" states (you have had 281 of these). If a Z-Score shows an extreme spike in current, it\u2019s a red flag that your system is drawing more power than it should, helping you catch potential failures before they spoil your food.\n\n**In short:** The Z-Score tells you if your fridge is acting \"business as usual\" or if it\u2019s time to take a closer look.","cached_at":"2026-07-15T17:35:02+05:00","expires_at":1784119202}