Wind diagram maybe part of the rosette on fol. 69r (per JD) of the Voynich manuscript. There is some similarity with the unique wind rosette in Oxford, St. John's College MS 17 (12th century, England, visit here ).
The first set of dividers - those separating the quarters - are decorated with stylized foliage and yellow borders. They may correspond to the green lines in the VMs drawing.
The second set of dividers - those dividing each quarter into three parts - may correspond to the blue lines in the VMs rosette.
To save you time, I counted the dotted bubbles decorating the border of the rosettes - 46 in MS 17 and 45 in the VMs.