where time is the travel time between the landing port and
Barcelona wholesale market.
In this analysis,apart from the continuous variables:price,
landings and travel time that are expressed in natural logarithms,
all other factors are expressed as discrete(dummy)variables:day,
month, year and port.This follows established methodology of the
previous literat ureusing GLMM and hedonic methods to estimate
the marginal value of attributes of seafood products ,as well as the more general literature.