---
title: 'Formulalar maʼlumotnomasi'
description: AI Analytics hisobotlarida ishlatiladigan har bir metrika, ball va chegara — bitta sahifada.
section: AI Analytics
weight: 3
related:
  - ai-analytics/methodology
---

Hisobotlarda ishlatiladigan har bir formula bir joyga yigʻilgan. Har bir formula u tegishli boʻlgan hisobot va qoʻllaniladigan kontekst bilan izohlangan. Matematika KaTeX yordamida render qilinadi.

## Composite scoring — multiplier mantigʻi

Mustaqil signallarni mustaqil ehtimollar kabi birlashtiradi. **Metering Bypass** (tugun va flot) tomonidan ishlatiladi.

$$
S_\text{composite} = 100 \cdot \left(1 - \prod_{i=1}^{N}(1 - p_i)\right)
$$

bu yerda $p_i \in [0, 1]$ — ishga tushgan $i$-paternning severity-dan kelib chiqqan ehtimoli:

$$
p_i = \begin{cases}
0.00 & \text{severity}=\text{info} \\
0.10 & \text{severity}=\text{low} \\
0.30 & \text{severity}=\text{medium} \\
0.50 & \text{severity}=\text{high} \\
0.65 & \text{severity}=\text{high\_plus}
\end{cases}
$$

**Misol.** Ikkita high+ patern: $S = 100 \cdot (1 - 0.35^2) = 87.75$. Ball faqat patern aniqlash asosida atayin 100 ga **yeta olmaydi** — 100 ga toʻyinish uchun tasdiqlangan qurilma hodisalari kerak (ularsiz confidence shipi = medium).

## Vaznli yigʻindi (weighted-sum) bahosi

**Top Problem Nodes** (besh oʻlchov):

$$
S_\text{composite} = \sum_{k \in K} w_k \cdot s_k, \quad K = \{\text{battery}, \text{telem}, \text{quality}, \text{risk}, \text{events}\}
$$

Teng vaznlash, har biri $w_k = 20\%$.

**Top Gas Leaks** (toʻrt kichik baho, turli vaznlar):

$$
S_\text{leak} = 0.4 \cdot s_\text{quiet} + 0.3 \cdot s_\text{baseline} + 0.2 \cdot s_\text{drip} + 0.1 \cdot s_\text{drift}
$$

## Patern detektorlari — Metering Bypass

**Pattern 1 — default bosimda nol oqim** (severity = high+, p = 0.65):

$$
\text{trigger} = (\bar Q \leq 0.5\,\text{m³/h over a window} \geq 6\,\text{h}) \land (\sigma_P < 0.1\,\text{kPa}) \land (P \in \mathcal{D})
$$

$\mathcal{D} = \{100.0, 101.325, 103.0, 105.0\}_{\pm 0.5} \cup \{0.0\}_{\pm 0.3}$ (kPa). Bular gaz hajm korrektori bosim datchigi uzilganda yoki almashtirilganda qaytadigan tipik default qiymatlar.

**Pattern 2 — qotgan bosimda nol oqim** (severity = medium, p = 0.30). Yopiq gaz hajmi uchun Gey-Lyussak qonunining buzilishi.

$$
\text{trigger} = (\bar Q \leq 0.5\,\text{m³/h}) \land (\Delta T \geq 1\text{°C}) \land (\sigma_P < 0.1\,\text{kPa})
$$

Gey-Lyussak boʻyicha kutilgan ΔP (izoxorik jarayon):

$$
\frac{P_1}{T_1} = \frac{P_2}{T_2} \;\Longrightarrow\; \Delta P_\text{expected} = P_\text{abs}^{(1)} \cdot \frac{\Delta T_K}{T_1^{(K)}}
$$

bu yerda:

- $P_\text{abs}^{(1)} = P_\text{gauge} + 101.325$ kPa, agar $P_\text{gauge} < 50$ kPa (gauge datchik); aks holda $P_\text{abs} = P_\text{kPa}$
- $T^{(K)} = T_{°C} + 273.15$
- $\Delta T_K = |T_2^{(K)} - T_1^{(K)}| = |T_2^{°C} - T_1^{°C}|$ (Kelvin farqi ≡ Selsiy farqi)

«P qotgan» trigger holati:

$$
\frac{\Delta P_\text{expected}}{\sigma_P} \geq 3
$$

**False-positive himoya — tarmoq tuguni.** Gey-Lyussak faqat **yopiq hajm** uchun amal qiladi. Gaz magistraliga ulangan tugunda gauge bosim regulator tomonidan ushlab turiladi, gaz fizikasi tomonidan emas. Detektor ishga tushishidan oldin:

$$
\text{is\_network} = (\text{median}(P_\text{gauge}) < 10\,\text{kPa}) \land (\sigma_P^\text{(window)} < 2\,\text{kPa}) \land \neg \text{is\_p\_sensor\_broken}
$$

Agar tugun tarmoq tuguni boʻlsa, barcha qotgan-bosim hodisalari balldan chiqariladi va axborot kartochkasi qoʻshiladi.

**Pattern 3 — nol-oqim runidan keyin tiklanish** (severity = high, p = 0.50). Uzoq nol-oqim runidan keyin darhol sinxron Q + P sakrashi:

$$
\text{trigger} = \exists\, t \in [\text{end}_\text{run}, +2\text{h}] : Q(t) \geq 10 \land |\Delta P| \geq 20\,\text{kPa}
$$

**Pattern 4 — toza seanslar bilan boʻshliq** (severity = medium, p = 0.30). Qurilma aniq aloqada boʻlgani holda arxivda yoʻqolgan soatlar:

$$
\text{trigger} = (\text{missing\_hours} \geq 24) \land (\text{successful\_sessions\_in\_gap} \geq 1)
$$

### Old filtrlar (false-positive himoyasi)

| Signal              | Chegara                                                                        | Taʼsir                                                      |
| ------------------- | ------------------------------------------------------------------------------ | ----------------------------------------------------------- |
| P datchigi buzilgan | P ≥ 168 soat oynada istalgan paytda qotgan                                     | barcha P-asosli detektorlar oʻchiriladi                     |
| Tarmoqqa ulangan    | median(P_gauge) < 10 kPa VA σ_P < 2 kPa VA buzilmagan                          | qotgan-bosim paterni balldan chiqariladi                    |
| Telemetriya spike   | $P > 500$ kPa YOKI ($Q > 20 \times \text{median}(Q)$, Q > 1000 m³/h boʻlganda) | qator tampering mantigʻidan oldin NULL bilan almashtiriladi |

Severity chegarasi, barcha detektorlardan keyin va suspicion-score oldidan qoʻllanadi:

| Hodisalar tarkibi             | Ruxsat etilgan maksimum daraja |
| ----------------------------- | ------------------------------ |
| high+ mavjud                  | very high                      |
| high mavjud                   | high                           |
| ikkita yoki undan koʻp medium | high                           |
| roppa-rosa bitta medium       | medium                         |
| faqat low yoki yoʻq           | medium                         |

## Coverage va maʼlumotlar sifati — Consumption Analytics

$$
\text{cov} = \frac{H_\text{OK} + H_\text{NULL}}{H_\text{expected}}, \quad
\text{unobs}_\% = (1 - \text{cov}) \cdot 100\%
$$

| Shart             | Severity |
| ----------------- | -------- |
| `tail_h > 168` h  | critical |
| `unobs_pct > 30%` | high     |
| `unobs_pct > 10%` | medium   |
| boshqa hollarda   | low      |

**Kuzatilmagan hajm bahosi (ikki usul).** Oʻrtacha oqim ekstrapolyatsiyasi:

$$
V^{(\text{mean})}_\text{unobs} = \bar Q_\text{OK} \cdot H_\text{unobs}
$$

Sutkalik profilni qayta tiklash:

$$
V^{(\text{profile})}_\text{unobs} = \sum_{h \in \text{unobs}} \bar Q_h
$$

**Operatsion idle chegarasi:**

$$
\frac{|\{h : Q(h) < 0.05\}|}{H_\text{OK}} > 0.95 \Rightarrow \text{idle rejim (nol isteʼmol uchun jarima qoʻyilmaydi)}
$$

**Q/V solishtirish:**

$$
\Delta V_\text{integral} = \sum_h Q(h) \cdot 1\text{h}, \quad \Delta V_\text{counter} = V(t_\text{end}) - V(t_\text{start})
$$

$$
\text{Q/V mismatch belgisi qoʻyiladi, agar } \frac{|\Delta V_\text{counter} - \Delta V_\text{integral}|}{\Delta V_\text{counter}} > 5\%
$$

5% bardosh OIML R 137 sinf 1.0 plyus integratsiya yaxlitlash ruxsatiga mos keladi.

## Kichik baholar — Top Problem Nodes

**Tezkor old-tartiblash (faqat metadata):**

$$
S_\text{fast} = d_\text{pts}(\text{days\_since\_last\_session}) + s_\text{pts}(\text{status})
$$

$$
d_\text{pts}(d) = \begin{cases}
100 & d \geq 60 \\
60 + (d-30) \cdot 1.33 & 30 \leq d < 60 \\
20 + (d-7) \cdot 1.74 & 7 \leq d < 30 \\
d \cdot 2.85 & d < 7
\end{cases}
$$

$s_\text{pts} = 30$, agar qurilma statusi "operational" boʻlmasa, aks holda 0.

**Batareya kichik bahosi (mV):**

$$
v_\text{pts} = \begin{cases}
100 & V_\text{last} < 3000 \\
80 & V_\text{last} < 3200 \\
50 & V_\text{last} < 3400 \\
25 & V_\text{last} < 3600 \\
0 & \text{aks holda}
\end{cases}
$$

$$
S_\text{battery} = \min(100, v_\text{pts} + d_\text{pts}(\text{drop\_pct}))
$$

bu yerda $d_\text{pts} = 30$ agar tushish > 10%, 15 agar tushish > 5%, aks holda 0.

**Risk kichik bahosi:**

$$
S_\text{risk} = \frac{1}{1.85} \sum_i \min(\text{cap}_i, \alpha_i \cdot n_i)
$$

| Signal $n_i$    | $\alpha_i$ | cap |
| --------------- | ---------- | --- |
| `quiet_n_pct`   | 0.8        | 40  |
| `n_plateau`     | 4          | 20  |
| `n_neg` (binar) | 25         | 25  |
| `n_live_p`      | 8          | 40  |
| `n_pt_resets`   | 6          | 30  |
| `n_drop_rec`    | 5          | 30  |

**Events kichik bahosi:**

| Shart                          | $S_\text{events}$ |
| ------------------------------ | ----------------- |
| physical VA substitution       | 100               |
| faqat physical                 | 80                |
| faqat substitution             | 60                |
| faqat metrology / system error | 30                |
| hodisa yoʻq                    | 0                 |

## Batareya chegarasi — Battery Forecast va Fleet Battery Forecast

**Manba boʻyicha baho (% yoki mV):**

$$
S_\text{metro} = \text{clip}_{[0,100]}\left(\frac{V - V_\text{crit}}{V_\text{fresh} - V_\text{crit}} \cdot 100\right)
$$

| Shkala                  | $V_\text{crit}$ | $V_\text{fresh}$ |
| ----------------------- | --------------- | ---------------- |
| % (metering Li-SOCl₂)   | 20              | 90               |
| mV (telemetriya Li-pol) | 3300            | 3600             |

**Composite (eng zaif zveno):**

$$
S_\text{battery} = \min(S_\text{metro}, S_\text{telem})
$$

**$T_\text{crit}$ bashorati (uch senariy):**

$$
T_\text{crit}^{(\text{opt})} = t_\text{now} + \frac{V_\text{now} - V_\text{crit}}{|\text{drop\_rate}|}
$$

$$
T_\text{crit}^{(\text{real})} = T_\text{crit}^{(\text{opt})} \cdot (1 - \alpha_\text{accel})
$$

$$
T_\text{crit}^{(\text{pess})} = T_\text{crit}^{(\text{real})} \cdot 0.5
$$

Hisobot oynasida almashish hodisasi topilganda barcha chiziqli regressiyalar almashishdan keyingi davr bilan cheklanadi. Aks holda almashishdagi kuchlanish sakrashi (masalan, 3225 → 4197 mV) notoʻgʻri musbat slope beradi — quvvatlanmaydigan Li-pol uchun bu fizik mumkin emas.

$$
\text{slope}_\text{real} = \text{linreg}\big(\{(t_i, v_i) : t_i \geq t_\text{replacement}\}\big)
$$

**Telemetriya bloki almashishi.** Batareyasi tsikllanmaydigan telemetriya paketi boʻlgan qurilmalar uchun "razryaddan kritikkacha kun" bashorati qoʻllanmaydi. Almashish qarori **uchtadan eng yomoni** boʻlgan mustaqil mezon sifatida olinadi.

Taqvim yoshi:

$$
\text{age\_status} = \begin{cases}
\text{ok}   & y_\text{age} < 0.75 \cdot y_\text{expected} \\
\text{plan} & 0.75 \cdot y_\text{expected} \leq y_\text{age} < y_\text{expected} \\
\text{due}  & y_\text{age} \geq y_\text{expected}
\end{cases}
$$

bu yerda $y_\text{expected} = 3$ yil (Li-pol pasport muddati).

Paket byudjetiga nisbatan ishlatilgan seanslar:

$$
\text{sessions\_status} = \begin{cases}
\text{ok}   & \text{ratio} < 0.75 \\
\text{plan} & 0.75 \leq \text{ratio} < 1.0 \\
\text{due}  & \text{ratio} \geq 1.0
\end{cases}, \quad \text{ratio} = \frac{\text{sessions\_used}}{2000}
$$

2000-seansli byudjet 2000 mAh paketga mos keladi (TX yuk ostida bir seans ≈ 1 mAh).

Yuk ostida degradatsiya (oxirgi 30 kun vs 180–150 kun oldin):

$$
\text{deg\_pct} = 100 \cdot \frac{\min(V_\text{old}) - \min(V_\text{recent})}{\min(V_\text{old})}
$$

$$
\text{deg\_status} = \begin{cases}
\text{ok}       & \text{deg\_pct} < 3\% \\
\text{watch}    & 3\% \leq \text{deg\_pct} < 8\% \\
\text{degraded} & \text{deg\_pct} \geq 8\%
\end{cases}
$$

Yakuniy verdikt (uchtadan eng yomoni):

$$
\text{overall} = \begin{cases}
\text{due}  & \text{any of } \{\text{age, sessions, deg}\} \in \{\text{due, degraded}\} \\
\text{plan} & \text{else if any} \in \{\text{plan, watch}\} \\
\text{ok}   & \text{otherwise}
\end{cases}
$$

**Batareya sigʻimi signal / consumption modellari uchun:**

$$
\Delta V_\text{period} = V_\text{first} - V_\text{last}, \quad
\Delta C_\text{used} = \Delta V \cdot \frac{C_\text{mAh}}{1200\text{ mV}}
$$

bu yerda 1200 mV — nominaldan toʻliq razryadgacha boʻlgan Li-pol kuchlanish diapazoni (3.0 → 4.2 V). Anomal tushish aniqlanadi, agar oxirgi 30 kundagi tushish tezligi 90 kunlik baseline'dan ikki marta oshsa.

## Sizish aniqlash — Top Gas Leaks

**Punktga moslangan chegara:**

$$
\theta_\text{leak} = \max(0.05, P_{95}(Q) \cdot 0.05)
$$

Har bir punktning oʻz p95-idan 5% — moslashuvchi, shuning uchun tijorat obʼektlari uy xoʻjaliklari bilan bir xil chegarada belgilanmaydi.

**Kichik baholar:**

$$
s_\text{quiet} = 100 \cdot \frac{\min_{h \in [2,5]} Q(h)}{\theta_\text{leak}} \text{ (100 da kesiladi)}
$$

$$
s_\text{baseline} = 100 \cdot \frac{P_5(Q)}{\theta_\text{leak}} \text{ (100 da kesiladi)}
$$

$$
s_\text{drip} = 100 \cdot \frac{|\{h : 0.5\theta \leq Q(h) \leq 2\theta\}|}{|H|}
$$

$$
s_\text{drift} = 100 \cdot \tanh\left(\frac{\text{slope}(P_5)}{\theta_\text{leak} / \text{month}}\right)
$$

## CO₂e hisoblari — Decarbonization va Emissions and Energy

**Metan → CO₂e:**

$$
m_\text{CH4} = V_\text{leak} \cdot \phi_\text{CH4} \cdot \rho_\text{CH4}, \quad \rho_\text{CH4} = 0.68 \text{ kg/m³}
$$

$$
m_\text{CO2e}^{(\text{GWP100})} = m_\text{CH4} \cdot 28, \quad m_\text{CO2e}^{(\text{GWP20})} = m_\text{CH4} \cdot 84
$$

GWP koeffitsiyentlari IPCC AR6 boʻyicha (20-yillik koeffitsiyent yaqin muddatli yumshatish maqsadlariga muhim boʻlgan qisqa muddatli isish taʼsirini aks ettiradi).

**Toʻgʻridan-toʻgʻri CO₂ (yoqilgan gazdan):**

$$
m_\text{CO2,direct} = V_\text{consumed} \cdot \text{EF}_\text{CO2}, \quad \text{EF}_\text{CO2} = 1.96 \text{ kg/m³}
$$

**Energiya:**

$$
E_\text{GJ} = V \cdot \text{HHV}, \quad \text{HHV} = 37.0 \text{ MJ/m³}
$$

$$
E_\text{kWh} = E_\text{GJ} \cdot \frac{1000}{3.6}
$$

## Investitsiya senariylari — Decarbonization va Automation ROI

**CAPEX / OPEX (har tugun uchun):**

$$
\text{CAPEX}_\text{total} = N \cdot \text{capex\_per\_node}, \quad \text{OPEX}/\text{year} = N \cdot \text{opex\_per\_node\_per\_year}
$$

**Qiymat / Payback:**

$$
\text{Value}/\text{year} = \sum_\text{hot spots}(\text{gas} + \text{carbon}_\text{GWP100})
$$

$$
\text{Payback}_\text{months} = \begin{cases}
\dfrac{\text{CAPEX}}{\text{Value} - \text{OPEX}} \cdot 12 & \text{Value} > \text{OPEX} \\
\text{none} & \text{otherwise}
\end{cases}
$$

**ROI / TCO:**

$$
\text{ROI} = \frac{\text{Value/year} - \text{OPEX/year}}{\text{CAPEX}_\text{total}} \cdot 100\%
$$

$$
\text{TCO}_5 = \text{CAPEX}_\text{total} + 5 \cdot \text{OPEX/year}
$$

## Isteʼmol bashorati — Gas Demand Forecast

**Chiziqli model (OLS):**

$$
Q(t) = \beta_0 + \beta_1 t + \sum_{k=1}^{2}[\alpha_k \sin(2\pi k t/365) + \gamma_k \cos(2\pi k t/365)] + \sum_{j=1}^{6} w_j \mathbb{1}_{\text{dow}=j} + \delta \cdot \text{HDD}(t) + \varepsilon
$$

Trend + ikki garmonikali yillik mavsumiylik + hafta-kuni dummylari + isitish-darajalar-kun termi.

**HDD:**

$$
\text{HDD}(t) = \max(0, 18°C - \bar T(t))
$$

**95% ishonch intervali:**

$$
\hat Q(t) \pm 1.96 \cdot \hat\sigma_\varepsilon \cdot \sqrt{1 + h(t)}
$$

**Backtest:**

$$
\text{MAE} = \frac{1}{N} \sum_t |Q(t) - \hat Q(t)|, \quad \text{MAPE} = \frac{1}{N} \sum_t \frac{|Q(t) - \hat Q(t)|}{Q(t)} \cdot 100\%
$$

$$
\text{Coverage}_{95\%} = \frac{1}{N} \sum_t \mathbb{1}_{Q(t) \in [\hat Q_t \pm 1.96\hat\sigma]}
$$

Sogʻlom moslik: coverage ≈ 95%, MAPE < 15%.

## Bosim anomaliyalari — Pressure Anomalies

**Outage:**

$$
\text{outage}(t) = \mathbb{1}_{P(t) = \text{null} \lor P(t) = 0}
$$

**Keskin tushish:**

$$
\text{drop}(t) = \mathbb{1}_{P(t-1) - P(t) > 5 \text{ kPa/h}}
$$

**Baseline drift:**

$$
\text{drift}_{30d} = \frac{P_5^{(\text{last 30d})} - P_5^{(\text{first 30d})}}{P_5^{(\text{first 30d})}} \cdot 100\%
$$

Tahlil qilingan davrda |drift| > 20% boʻlsa, baseline-drift insidenti koʻtariladi.

**Beqarorlik (rolling):**

$$
\text{instability}(t) = \frac{\sigma_P^{(24h)}}{\bar P^{(24h)}}
$$

≥ 6 soatlik oynada nisbat 0.3 dan oshsa, beqarorlik insidenti koʻtariladi.

## Uzun seanslar — IQR aniqlash

**Punkt boʻyicha chegara:**

$$
\theta_\text{long} = Q_3 + 1.5 \cdot \text{IQR}, \quad \text{IQR} = Q_3 - Q_1
$$

Robust outlier detektori — polling-seans davomliklarining qiyshiq taqsimoti uchun z-scoredan yaxshiroq.

**Severity bali:**

$$
S = 40 \cdot \text{long\_frac} + 30 \cdot \frac{\bar t_\text{anomaly}}{\theta_\text{long}} + 30 \cdot \text{n\_incidents\_critical}
$$

## Uy energetikasi — Household Report

**Taqsimot shabloni (xususiy uy):**

| Segment             | Ulush |
| ------------------- | ----- |
| Isitish             | 60%   |
| Issiq suv taʼminoti | 20%   |
| Ovqat pishirish     | 10%   |
| Boshqa              | 10%   |

**Isolatsiyadan tejash:**

$$
\Delta V_\text{insulation} = V_\text{heating} \cdot 0.15 \text{ (tipik retrofit)}
$$

**Murakkab foiz (tejamlar r stavkasida qoʻyiladi):**

$$
\text{Reinvest}_T = \text{Savings} \cdot \frac{(1 + r)^T - 1}{r}
$$

## Severity tasnifi — yagona shkala

| Diapazon | Severity | Rang       | Kontekst                              |
| -------- | -------- | ---------- | ------------------------------------- |
| 0–9      | OK       | yashil     | composite, top problem nodes          |
| 10–29    | Low      | koʻk       | composite                             |
| 30–49    | Medium   | sariq      | composite                             |
| 50–69    | High     | toʻq sariq | composite, top problem nodes warning  |
| 70–100   | Critical | qizil      | composite, top problem nodes critical |

Top Problem Nodes 30 / 60 chegaralarini ishlatadi — yashil mintaqaning koʻproq qismi "normal" holat deb hisoblanadi.

## Confidence ramkasi — Decarbonization va Metering Bypass

| Confidence | Shart                                           |
| ---------- | ----------------------------------------------- |
| **High**   | deep score ≥ 80, ≥ 6 oy maʼlumot bilan          |
| **Medium** | deep score ≥ 50 yoki cheklangan maʼlumot tarixi |
| **Low**    | past ball / fallback baholash                   |

## Dala tekshiruvi prioriteti — Metering Bypass

| Shart                                         | Priority          |
| --------------------------------------------- | ----------------- |
| Yaqindagi physical hodisa (≤ 7 kun)           | **P0** (override) |
| Eski physical hodisa (> 7 kun)                | **P1**            |
| score ≥ 70, confidence medium yoki high bilan | **P0**            |
| score ≥ 70, confidence low bilan              | **P1**            |
| score ≥ 50                                    | **P1**            |
| score ≥ 30                                    | **P2**            |
| score < 30                                    | **P3**            |

## Konstantalar maʼlumotnomasi

| Belgi                           | Qiymat     | Manba                        | Qaerda ishlatiladi                    |
| ------------------------------- | ---------- | ---------------------------- | ------------------------------------- |
| $\text{EF}_\text{CO2}$          | 1.96 kg/m³ | IPCC AR6                     | Decarbonization, Emissions and Energy |
| $\text{HHV}$                    | 37.0 MJ/m³ | tabiiy gaz uchun tipik (IEA) | Emissions and Energy                  |
| $\rho_\text{CH4}$               | 0.68 kg/m³ | standart sharoit             | Decarbonization                       |
| $\text{GWP}_{100}$              | 28         | IPCC AR6, 100-yillik         | Decarbonization, Emissions and Energy |
| $\text{GWP}_{20}$               | 84         | IPCC AR6, 20-yillik          | Decarbonization, Emissions and Energy |
| Nolga yaqin oqim                | 0.5 m³/h   | empirik                      | Metering Bypass                       |
| Min nol-oqim runi               | 6 h        | empirik                      | Metering Bypass                       |
| Qotgan-bosim σ                  | 0.1 kPa    | empirik                      | Metering Bypass                       |
| Gey-Lyussak uchun min ΔT        | 1.0 °C     | empirik                      | Metering Bypass                       |
| Tiklanish Q min                 | 10 m³/h    | empirik                      | Metering Bypass                       |
| Tiklanish ΔP min                | 20 kPa     | empirik                      | Metering Bypass                       |
| Fizik P max                     | 500 kPa    | fizik chegara                | Metering Bypass old filtri            |
| Q spike koʻpaytuvchisi          | 20×        | empirik                      | Metering Bypass old filtri            |
| P-datchik-buzilgan qotish vaqti | 168 h      | empirik                      | Metering Bypass datchik holati        |
| HDD baza harorati               | 18 °C      | IPCC                         | Gas Demand Forecast                   |
| Default sizish ulushi           | 0.5%       | IEA flot oʻrtachasi          | Decarbonization fallback              |

Metodologiya manbalari: IPCC AR6 (WG I, 7-bob) — GWP va emissiya koeffitsiyentlari; OIML R 137-1 — gaz hisoblagichlarining aniqlik sinflari; ISO 5167 va AGA Report No. 3 — diferensial-bosimli oqimni hisoblash; EN 1776 — hisobga olish punktini loyihalash konvensiyalari; GHG Protocol Scope 1 — toʻgʻridan-toʻgʻri yoqish CO₂ hisobi.