Chemometrics and Bioinformatics Group, Department of Chemistry, Norwegian University of Science and Technology, N-7491 Trondheim, Norway. gidskeha@phys.chem.ntnu.no|Chemometrics and Bioinformatics Group, Department of Chemistry, Norwegian University of Science and Technology, N-7491 Trondheim, Norway. gidskeha@phys.chem.ntnu.no|Chemometrics and Bioinformatics Group, Department of Chemistry, Norwegian University of Science and Technology, N-7491 Trondheim, Norway. gidskeha@phys.chem.ntnu.no|Chemometrics and Bioinformatics Group, Department of Chemistry, Norwegian University of Science and Technology, N-7491 Trondheim, Norway. gidskeha@phys.chem.ntnu.no