Additional file 1: of Evaluating life-safety risk for fieldwork on active volcanoes: the volcano life risk estimator (VoLREst), a volcano observatory’s decision-support tool

VoLREst spreadsheet for calculating life-safety risk as a function of distance from volcanic vent. All DARK GREY cells must be tailored for a specific volcano, and YELLOW cells must be updated for every application of VoLREst. In the RED cell enter the hourly risk of fatality of interest; the corresponding distance will be provided immediately underneath. (XLSX 33 kb)