Table 4.

Random variables and their distribution.

Random Variable	Distribution	Random Variable	Distribution
Processing time $N_{e{x}_1}$	$~\mathcal{N}\left(\mathrm{50,15}\right)$	Demand $E{x}_1$	$~\mathcal{U}\left(\mathrm{20,50}\right)$
Processing time $N_{e{x}_2}$	$~\mathcal{N}\left(\mathrm{50,15}\right)$	Demand $E{x}_2$	$~\mathcal{U}\left(\mathrm{20,50}\right)$
Travel time	$~\mathcal{N}\left(\mathrm{5,1}\right)$	Demand $N_{e{x}_1}$	$~\mathcal{U}\left(\mathrm{1,10}\right)$
Severity Level (Weight)	$~\mathcal{U}\left(\mathrm{1,6}\right)$	Demand $N_{e{x}_2}$	$~\mathcal{U}\left(\mathrm{1,10}\right)$
CP $N_{e{x}_1}$	$~\mathcal{N}\left(0.9,0.02\right)$	CP $N_{e{x}_2}$	$~\mathcal{N}\left(0.9,0.02\right)$