Renault Fluence Renault Z.E. program of electric vehicles. At the same show, the Israeli company Better Place announced the Renault Fluence Z.E. would be the first electric car with a switchable battery available on the network of battery swap charging stations that it is developing in Israel. The Fluence Z.E is outfitted with a 22 kWh lithium-ion battery which allows a total all-electric range of , with speeds up to . Sales of the Fluence Z.E. are scheduled for 2011 in Israel, Denmark and the rest of Europe, and for 2012 in the rest of the world such as Asia. At the
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