I’m working with an order book that contains the 10 best bid and 10 best ask levels. A common approach for estimating volatility is to use the mid-price, typically computed from the first best bid and first best ask. However, this method only considers the top level of the book and neglects the information provided by the other levels, which may be relevant—especially if orders at those levels are executed. Given this context, are there alternative methods for computing volatility that still rel