Live 即時
Statistics 統計
Flights per day by route 每日航路
When is W8 used? W8 使用時段
Share of W8 among flights classified W2 or W8, by weekday and departure hour (Taiwan time). W8 is only available with military approval.
By city pair 各航線
Flights 航班
Download CSVClick a flight to show its track on the map.
Method 方法
Positions come from the OpenSky Network (ADS-B), polled every 30 s from 06:30 to 22:30 Taiwan time. Every position north of 25.25°N, away from the shared end points (APU near Taipei, NK at Matsu), votes for the airway it lies closer to: it must be within 8 NM and at least 2.5 NM closer than to the other airway. A flight is W2 or W8 when at least 80% of its on-airway votes agree. It is Mixed when it switched between them, Other when it flew neither (for example direct routing), and Unknown when there was too little data.
Each afternoon a backfill uses OpenSky's historical flights and tracks for the previous day. It fills gaps, and it covers the whole day if the live quota ran out ("daily mode").