Renault Fluence Mégane range featured a "three box" notchback sedan variant until 2008, but this was never a big seller and when, at the end of that year, the Mégane III was introduced, there was no notchback version available. It is the gap in the range left by the removal of this model from the FrancoSpanish assembled Mégane range that the Fluence fills in those markets in the company's western European heartland, such as France, Italy, Belgium, Ireland and, since August 2010, Germany, where Renault offers it. The Renault Fluence is also badged as Renault Samsung SM3. The Renault Samsung car was
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