Total σ : Cross sections

herwig++~2.6.3--1pythia8~8.244Array
(
    [0] => herwig++
    [1] => 2.6.3--1pythia8
    [2] => 8.244
)
Array
(
    [0] => Array
        (
            [0] => herwig++
            [1] => 2.6.3--1pythia8
        )

    [1] => Array
        (
            [0] => 8.244
        )

)
Array
(
    [herwig++] => Array
        (
            [0] => 2.6.3--1pythia8
        )

    [8.244] => Array
        (
            [0] => 
        )

)

pp @ 7000 GeV