code: @Pure
  	public static GeodesicPosition L1_WSG84(double x, double y) {
  		final Point2d ntfLambdaPhi = NTFLambert_NTFLambdaPhi(x, y,
  				LAMBERT_1_N,
  				LAMBERT_1_C,
  				LAMBERT_1_XS,
  				LAMBERT_1_YS);
  		return NTFLambdaPhi_WSG84(ntfLambdaPhi.getX(), ntfLambdaPhi.getY());
  	}
docs: This function convert France Lambert I coordinate to geographic WSG84 Data.
  
  @param x is the coordinate in France Lambert I
  @param y is the coordinate in France Lambert I
  @return lambda and phi in geographic WSG84 in degrees.