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简体中文</span></span></div></a><a href='https://aqicn.org/station/validation/@484627/jp/' class='lang-ja'><div class='item'><div class='flag sprite-isprt-web-jp'></div><span class='name'>Japanese <span>- 日本</span></span></div></a><a href='https://aqicn.org/station/validation/@484627/es/' class='lang-es'><div class='item'><div class='flag sprite-isprt-web-es'></div><span class='name'>Spanish <span>- español</span></span></div></a><a href='https://aqicn.org/station/validation/@484627/kr/' class='lang-ko'><div class='item'><div class='flag sprite-isprt-web-kr'></div><span class='name'>Korean <span>- 한국의</span></span></div></a><a href='https://aqicn.org/station/validation/@484627/ru/' class='lang-ru'><div class='item'><div class='flag sprite-isprt-web-ru'></div><span class='name'>Russian <span>- русский</span></span></div></a><a href='https://aqicn.org/station/validation/@484627/hk/' class='lang-zh-TW'><div class='item'><div class='flag sprite-isprt-web-hk'></div><span class='name'>Traditional Chinese <span>- 繁體中文</span></span></div></a><a href='https://aqicn.org/station/validation/@484627/fr/' class='lang-fr'><div class='item'><div class='flag sprite-isprt-web-fr'></div><span class='name'>French <span>- Francais</span></span></div></a><a href='https://aqicn.org/station/validation/@484627/pl/' class='lang-pl'><div class='item'><div class='flag sprite-isprt-web-pl'></div><span class='name'>Polish <span>- Polski</span></span></div></a><a href='https://aqicn.org/station/validation/@484627/de/' class='lang-de'><div class='item'><div class='flag sprite-isprt-web-de'></div><span class='name'>German <span>- Deutsch</span></span></div></a><a href='https://aqicn.org/station/validation/@484627/pt/' class='lang-pt'><div class='item'><div class='flag sprite-isprt-web-br'></div><span class='name'>Portuguese <span>- Português</span></span></div></a><a href='https://aqicn.org/station/validation/@484627/vn/' class='lang-vi'><div class='item'><div class='flag 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class='lang-th'><div class='item'><div class='flag sprite-isprt-web-th'>🇹🇭</div><span class='name'>Thai <span>- ภาษาไทย</span></span></div></a><a href='https://aqicn.org/station/validation/@484627/hu/' class='lang-hu'><div class='item'><div class='flag sprite-isprt-web-hu'>🇭🇺</div><span class='name'>Hungarian <span>- Magyar</span></span></div></a><a href='https://aqicn.org/station/validation/@484627/el/' class='lang-el'><div class='item'><div class='flag sprite-isprt-web-gr'>🇬🇷</div><span class='name'>Greek <span>- Ελληνικά</span></span></div></a><a href='https://aqicn.org/station/validation/@484627/ro/' class='lang-ro'><div class='item'><div class='flag sprite-isprt-web-ro'>🇷🇴</div><span class='name'>Romanian <span>- Română</span></span></div></a><a href='https://aqicn.org/station/validation/@484627/bg/' class='lang-bg'><div class='item'><div class='flag sprite-isprt-web-bg'>🇧🇬</div><span class='name'>Bulgarian <span>- български</span></span></div></a><a 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class='menubar-anchor'><div class='menubar-button' ontouchend='this.style.backgroundColor="rgb(127,194,227)";'><div class='sprite-isprt-web-link menubar-icon' title='Liên kết'></div><span class='menubar-title'>Liên kết</span></div></a></div><div class='menubar-cell'> <a id='menubar-settings' class='menubar-anchor'> <div class='menubar-button'> <div class='sprite-isprt-web-settings menubar-icon' id='footer-settings-img'></div> </div> </a> </div> </div> </div> <script> try { (function () { var innerMenu = document.getElementById('fixed-menubar-inner'); var items = innerMenu.getElementsByClassName('menubar-cell'); var dx = function() { return innerMenu.getBoundingClientRect().width - window.innerWidth;}; for (let i = items.length - 1; i >= 0 && dx() >= 0; i--) { items[i].classList.add("no-menu-text"); } }()); } catch (e) { console.error(e) } try { navmenu.init(); } catch (e) {} </script><div class='h1section'><h1><div id='h1header1' style='padding:2px;' >AirNet sensors Data Quality Validation Service</div><div id='h1header2' class='h1sub' >Route De Berre, Aix-en-Provence, France</div></h1></div><script>function titleSetterh1header1(x){fitLine('#h1header1',.88,{maxfs:45,content: x&&x.title});fitLine('#h1header2',.88,{maxfs:38,content: x&&x.subtitle});};titleSetterh1header1();</script><style> .section-outer { text-align: initial; } .section-content { max-width: 95%; width: 1100px; font-size: 18px; min-height: 300px; text-align: initial; margin-top: 10px; margin-bottom: 10px; line-height: 1.8; margin-left: auto; margin-right: auto; } .section-content-tight { min-height: 0px; } .section-content-alt { background-color: #f0f0f0; border-top: 1px solid #ccc; border-bottom: 1px solid #ddd } ; .section-banner { background-size: 100%; background: url(https://aqicn.org/images//bluesky-banner-panoramic.jpg) no-repeat center bottom #eee; margin-top: -2px; z-index: -1; border-bottom: 1px solid #888; width: 100%; } .h2-title { font-family: inherit; font-size: 1.1em; overflow: 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#f8f8f8; border-color: #adadad; text-decoration: none; color: black; } .ui-share-btn:hover svg { fill: black; } .ui-share-btn:hover svg g { fill: black; } .ui-share-btn a:hover { text-decoration: none; }</style><i style='color:#888;font-size:13px;word-break: break-all;'>Chia sẻ: <a href='https://aqicn.org/station/validation/@484627/vn/'>aqicn.org/station/validation/@484627/vn/</a></i><br></div><div style='clear:both;margin-bottom:10px;'></div><script type='text/javascript'>var validatorOptions = {"views":{"map":"comparative-map","body":"comparative-body"}};validatorOptions.titleSetter=titleSetterh1header1;</script> <h2> <span>Chào mừng bạn đến với dịch vụ Xác thực chất lượng dữ liệu cảm biến AirNet.</span> </h2> Station: <a href='/station/france-aix-en-provence-route-de-berre/vn/vn/'>Route De Berre, Aix-en-Provence, France </a> <i> also known as "NebuleAir 137" </i> <br><span>Đặt vị trí tại</span> "Route De Berre, Aix-en-Provence, Aix-en-Provence, Bouches-du-Rhône, 13090, France". <center><br>-<svg xmlns="http://www.w3.org/2000/svg" width="28" height="28" version="1" viewBox="0 0 26 26" enable-background="new 0 0 26 26"><path d="M 15.65625 -0.03125 C 14.280846 -0.03760636 12.828752 0.09254274 11.3125 0.40625 C 8.28651 1.0323169 5.7746616 2.1709106 3.96875 3.59375 C 2.3885774 4.8387345 1.3097647 6.3321654 1.0625 7.96875 A 1.0001 1.0001 0 0 0 1 8.40625 C 1 8.4709766 0.99753847 8.5296394 1 8.59375 C 0.99939321 8.6245955 1 8.6565744 1 8.6875 C 1.0067678 8.8049913 1.0164368 8.9159604 1.03125 9.03125 C 1.0536237 9.2185949 1.1014372 9.4156735 1.15625 9.59375 C 1.4590854 10.826485 2.2046296 11.91918 3.21875 12.78125 C 4.0779092 13.511593 5.1369309 14.083861 6.3125 14.53125 A 1.0001 1.0001 0 0 0 6.53125 14.9375 C 8.1339345 16.910035 12.101162 19.118434 18.1875 18.59375 A 1.0043849 1.0043849 0 0 0 18 16.59375 C 14.906411 16.860439 12.500325 16.269357 10.78125 15.5 C 14.30154 15.772761 18.245209 15.070028 21.71875 12.96875 A 1.0021949 1.0021949 0 1 0 20.6875 11.25 C 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5.1875 5.15625 C 6.6815884 3.9790894 8.91349 2.9489331 11.6875 2.375 C 13.071248 2.0887073 14.428529 1.9626064 15.65625 1.96875 z M 15.96875 3.65625 C 14.93792 3.617106 13.843984 3.69192 12.71875 3.90625 A 1.0001 1.0001 0 0 0 12.6875 3.9375 C 9.8940815 4.582135 7.6159262 5.8506824 6.5625 7.5625 A 1.0001 1.0001 0 1 0 8.25 8.625 C 8.7942179 7.740646 10.701734 6.434394 13.09375 5.875 C 13.10453 5.87295 13.11421 5.87702 13.125 5.875 C 15.064267 5.5112859 17.031887 5.6468794 18.03125 6.03125 A 1.0040202 1.0040202 0 0 0 18.75 4.15625 C 17.952461 3.8495042 16.99958 3.6953943 15.96875 3.65625 z M 9.15625 17.59375 A 1.0001 1.0001 0 0 0 8.5625 19.25 C 8.5625 19.25 11.033033 22.015963 15.53125 21.90625 A 1.0004882 1.0004882 0 1 0 15.46875 19.90625 C 11.766967 19.996537 10.0625 17.9375 10.0625 17.9375 A 1.0001 1.0001 0 0 0 9.15625 17.59375 z M 8.125 20.1875 A 1.0001 1.0001 0 0 0 7.40625 21.65625 C 7.40625 21.65625 8.6869767 23.974979 11.65625 24.09375 A 1.001098 1.001098 0 0 0 11.75 22.09375 C 9.7192733 22.012521 9.1875 20.75 9.1875 20.75 A 1.0001 1.0001 0 0 0 8.21875 20.1875 A 1.0001 1.0001 0 0 0 8.125 20.1875 z M 7.59375 23.0625 A 1.0001 1.0001 0 0 0 7.4375 23.09375 A 1.0001 1.0001 0 0 0 6.9375 23.34375 C 6.9375 23.34375 6.19375 24 5.09375 24 A 1.0001 1.0001 0 1 0 5.09375 26 C 6.99375 26 8.28125 24.84375 8.28125 24.84375 A 1.0001 1.0001 0 0 0 7.59375 23.0625 z" color="#000" ></path></svg>-<br><br></center> <p>Xác thực dữ liệu cảm biến được thực hiện bằng cách xem cả dữ liệu cảm biến độc lập (khi cảm biến tạo ra dữ liệu cấp phút) và dữ liệu so sánh (khi cảm biến được đặt cùng với các cảm biến khác).</p> <style type='text/css'>section {margin-top:20px;margin-bottom: 80px;}@media only screen and (max-width: 800px) { border-top: 1px solid #ccc;}@media only screen and (min-width: 800px) { section {padding-left: 20px;border-left: 3px solid #f8f8f8;}}</style><h2><p>Chất lượng dữ liệu độc lập</p></h2><section><p>Để đảm bảo chất lượng dữ liệu ở mức cao nhất, <a href='https://en.wikipedia.org/wiki/Signal-to-noise_ratio'>tỷ lệ tín hiệu trên nhiễu</a> (SNR), được định nghĩa là hệ số biến thiên so với số liệu ghi hàng giờ, phải tương đối thấp (dưới 33%).</p> <p>Bất kỳ phép đo nào có SNR liên tục cao hơn 10% đều có thể bị sai lệch do kết quả đọc của cảm biến không chính xác (chẳng hạn như quạt bị lỗi hoặc tích tụ bụi).</p> <p><a href='#standalone'>Hiển thị dữ liệu cho tôi</a></p> </section><h2><p>Chất lượng dữ liệu so sánh</p></h2><section><p>Để so sánh dữ liệu cảm biến với cảm biến cùng vị trí, biểu đồ "vùng tin cậy của dữ liệu đọc" được sử dụng, trong đó đường màu đỏ biểu thị dữ liệu đọc hàng giờ từ cảm biến, trong khi đường màu xanh lá cây biểu thị giá trị trung bình của dữ liệu đọc hàng giờ từ các trạm lân cận.</p> <p>Vùng được tô màu xanh lá cây biểu thị vùng tin cậy, tương đương với 3 lần độ lệch chuẩn của các trạm lân cận.</p> <p>Mỗi lần chỉ số theo giờ của trạm vượt quá vùng tin cậy, trạm được coi là tạo ra kết quả bất thường.</p> <p>Sự khác biệt giữa vùng đọc hàng giờ và vùng tin cậy càng lớn thì khả năng trạm đó bị coi là tạo ra dữ liệu không hợp lệ càng lớn.</p> <p>Công thức được định nghĩa là:</p> <center> \( d_i = {v_i - median_i \over {stddev_i }} \) , \( P = \sum_i ( \begin{cases} 1/n & d_i>5 \\ 0 & otherwise \end{cases} ) \) , \( D = \sqrt {\sum_i {d_i} \over n} \) <br> P=probability, D=distance and W=P*D </center> <p>trong đó 'i' được lặp lại trong dữ liệu 3 ngày qua và 'n' là số lượng mẫu trong 3 ngày qua (rất có thể n = 24*3).</p> <p>Nếu W>30, trạm sẽ tự động bị tắt.</p> <p><a href='#comparative'>Hiển thị dữ liệu cho tôi</a></p> <script type="text/javascript" id="MathJax-script" async src="https://cdn.jsdelivr.net/npm/mathjax@3/es5/tex-mml-chtml.js"> </script> </section><h2><p>Câu hỏi thêm</p></h2><section><p>Nếu bạn có bất kỳ câu hỏi hoặc nhận xét nào, hãy gửi tin nhắn cho chúng tôi bằng cách sử dụng mẫu dưới đây:</p> <form class='ui form' id="waqi-im-form" autocomplete="on"> <style> #waqi-im-form td { 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Số đông không có nguy cơ bị tác động.</td></tr> <tr style="background-color:#cc0033;"> <td class='aqiwtxt' nowrap="true">151-200</td> <td class='aqiwtxt'>Có hại cho sức khỏe</td> <td class='aqiwtxt'>Mỗi người đều có thể sẽ chịu tác động đến sức khỏe; nhóm người nhạy cảm có thể bị ảnh hưởng nghiêm trọng hơn.</td></tr> <tr style="background-color:#660099;"> <td class='aqiwtxt' nowrap="true">201-300</td> <td class='aqiwtxt'>Rất có hại cho sức khỏe</td> <td class='aqiwtxt'>Cảnh báo nguy hại sức khỏe nghiêm trọng. Đa số mọi người đều bị ảnh hưởng.</td></tr> <tr style="background-color:#7e0023;"> <td class='aqiwtxt' nowrap="true">300+</td> <td class='aqiwtxt'>Nguy hiểm</td> <td class='aqiwtxt'>Cảnh báo sức khỏe: tất cả mọi người có thể chịu tác động nghiêm trọng đến sức khỏe</td></tr> </table> </div><br>Để biết thêm về ô nhiễm và chất lượng không khí , xem <a href='http://en.wikipedia.org/wiki/Air_quality'> wikipedia chất lượng không khí</a> đang đề hoặc <a href='http://www.airnow.gov/index.cfm?action=aqibasics.aqi'> hướng dẫn về chất lượng không khí và sức khỏe của bạn </a>.<br><br>Để biết những lời khuyên về sức khỏe rất hữu ích của bác sĩ y khoa Richard Saint Cyr ở Bắc Kinh, xem <a href='http://www.myhealthbeijing.com/'> www.myhealthbeijing.com </a> blog.<br><br></center></div></div></div> <center> <br>  <ins class="adsbygoogle" style="display:block" data-ad-client="ca-pub-0281575029452656" data-ad-slot="2455076269" data-ad-format="auto"></ins> <script>(adsbygoogle = window.adsbygoogle || []).push({});</script> <style type='text/css'> .usage-notice { line-height:1.5; max-width:95%; width:1000px; margin-top:10px; padding:5px; font-size: 15px; background-color:#ffffff; text-shadow: 1px 1px 1px white; -webkit-box-shadow: 1px 1px 8px -3px rgba(0,0,0,0.3); } </style> <div class="textshadowwhite usage-notice" style=''> <b>Thông báo sử dụng</b>: Tất cả dữ liệu chất lượng không khí không được xác thực tại thời điểm công bố. Nhằm đảm bảo chất lượng, những dữ liệu này có thể được cập nhập mà không cần thông báo trước. Nhóm dự án Chỉ số chất lượng không khí toàn cầu đã thực hiện tất cả yêu cầu cần thiết trong việc biên soạn các thông tin này. 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