Figure 2   January CET predictions of multiple regression model using January P, S  & C indices for the period
used to create model (1881-1970) and for 1971-2003 compared with observed January CET 1881-2003 and
the model errors (observed - predicted CET).    
                 
   Equation is: Jan CET = 2.684 + (0.04682 x Jan P) + (0.0430 x Jan S) + (0.01223 x Jan C) which explains 52% of variation in Jan CET