1. LeMaRns::NS_L50
    The length at 50% of the maximum catchability of the catchability curve
  2. LeMaRns::NS_eta
    The steepness of the slope of the catchability curve
  3. LeMaRns::NS_mixed_fish
    Gear selectivity data frame
  4. LeMaRns::NS_other
    Other food for the North Sea
  5. LeMaRns::NS_par
    North Sea data
  6. LeMaRns::NS_tau
    North Sea interaction matrix
    matrix|21 x 21