Figure 2.

Relationships between daily maximum thermal predictors (lag_0-1) (°C) and mortality of the very elderly (subjects ≥75 years of age) in an inland city (Florence) and coastal-plain city (Livorno). Relationships estimated by using urban and suburban meteorological data for the period 2006–2008 (May–October). UTCI: Universal Thermal Climate Index; AT_sun: apparent temperature assessed outdoors also taking the solar radiation contribution into account; AT_sha: apparent temperature assessed outdoors in the shade; AT_ind: apparent temperature assessed in indoor conditions; T _air: environmental temperature. Analyses were controlled for air pollution concentrations, daylight hours, year, day of the week, public holidays, and summer population decrement.