5 (blue) and 15 (red) minutes oscillation percentage on 1-minute timeframe using average prices (high+low/2).
Borderlines (black) are extreme oscillation percentages for the last 200 periods smoothed in 10 frames to find out breakout movements.
In true TradingView spirit, the author of this script has published it open-source, so traders can understand and verify it. Cheers to the author! You may use it for free, but reuse of this code in a publication is governed by House Rules. You can favorite it to use it on a chart.