Additional file 5. Spatio-temporal probability isocontour maps obtained by multiplying the values of the spatial analysis of last 300 ka eruptions by their long-term average recurrence rate, 1.1 eruptions/10 kyr. (a, b, and c) Maps show the probabilities of occurrence of at least one eruption in Harrat Khaybar for the next 1, 10, and 1000 years, respectively.