If you remember on 15 December 2011, as described in this post, Google introduced in webmaster tools the option Author stats that in April 17 were removed for some bug in the statistics shown.
Finalmente dopo 3 mesi questo strumento molto utile per gli autori è tornato in vita e lo potete trovare nel vostro account all’indirizzo https://www.google.com/webmasters/tools/labs-author-stats-1?hl=en.
The tool essentially is not changed compared to the first version and the only hope is that now shows data consistent with reality.
In addition to these data, we can also filter out various parameters such as source, the device and the url.
Remember that this tool only shows the data and url where your face appeared in serp and that each author can view only the data of the articles he has written with confirmed authorship.
If you want to know how to implement correctly the authorship markup please read this guide.
and if interested