# Objective functions
MINIMUM_LCC = 1
MINIMUM_EC = 2
MINIMUM_EMISSIONS = 3
MINIMUM_LCC_MINIMUM_EC = 4
MINIMUM_LCC_MINIMUM_EMISSIONS = 5
MINIMUM_EC_MINIMUM_EMISSIONS = 6
MINIMUM_LCC_MINIMUM_EC_MINIMUM_EMISSIONS = 7
OBJECTIVE_FUNCTIONS = [MINIMUM_LCC,
                       MINIMUM_EC,
                       MINIMUM_EMISSIONS,
                       MINIMUM_LCC_MINIMUM_EC,
                       MINIMUM_LCC_MINIMUM_EMISSIONS,
                       MINIMUM_EC_MINIMUM_EMISSIONS,
                       MINIMUM_LCC_MINIMUM_EC_MINIMUM_EMISSIONS]