Roberta Sauro Graziano (a), Stefano Menichetti (b), Stefano Tessitore (b) & Antonella Buccianti (a)
(a) Department of Earth Sciences, University of Florence, via G. La Pira 4, 50121, Florence, Italy.
(b) ARPA Toscana, via N. Porpora 22, 50144, Florence, Italy.
Corresponding author e-mail: roberta.saurograziano@unifi.it.