shortcode to show visits for specific month

Hi there! I love this plugin but have been stumped and hope you can help. I’d like to use the shortcode to display visits for each of the 12 months in a year. For example [wpstatistics stat=visitors time=January-2018] or something. I’ve looked through the documentation and have tried several iterations of what I thought might get me there but nothing seems to work. Any help would be huge!

Thank you so much for your dev on this plugin!!