Table 4.

Risk combination matrix according to Gale et al. [54].

Event 2	Negligible	Very low	Low	Moderate	High	Very high
Event 1
Negligible	negligible	negligible	negligible	negligible	negligible	negligible
Very low	negligible	negligible	negligible	very low	very low	very low
Low	negligible	negligible	very low	low	low	low
Moderate	negligible	very low	low	moderate	moderate	moderate
High	negligible	very low	low	moderate	high	high
Very high	negligible	very low	low	moderate	high	very high