Renault Fluence Z.E. in the market and the first of South Korean assembly, the SM3 Z.E. led electric vehicle sales in the country, capturing a 58% market share of the segment and 453 cars sold that year. The company attributed this to its AC-3 charger, its greater autonomy compared to rivals and a better warranty for the battery. The Fluence Z.E. was released in the United Kingdom in the Spring of 2012 though was withdrawn from sale in 2014. The batteries required a mandatory lease which according to Renault, was the UK's most affordable electric car. By not having to purchase the battery
Latitude of the Gulf Stream and the Gulf Stream north wall index analysis was then used to find the pattern of variation common to the six longitudes. This is preferable to simple averaging of the six latitude estimates which would emphasise the eastern longitudes where the north-south movements are largest, and possibly obscure smaller but coherent north-south shifts further west. Correlation coefficients are calculated between the six time-series and the principal components are the eigenvectors of the resulting correlation matrix. (Empirical orthogonal function analysis proceeds instead from the variance-covariance matrix which again is biased to the eastern longitudes.) Each principal component is calculated as a weighted average of the standardised latitude series