Black Lives Matter. Please consider donating to Black Girls Code today.

Hovermode on ribbons

using a ribbon and hovermode = ‘x’ I’d like one hoverbox to follow the top of the ribbon and one to follow the lower end of the ribbon. By default it follows the top (cf the graph at the bottom). Is there a way to attach an y-location to the hoverbox, such that I can make 2 of them?