R version 2.15.1 (2012-06-22) -- "Roasted Marshmallows"
Copyright (C) 2012 The R Foundation for Statistical Computing
ISBN 3-900051-07-0
Platform: i686-pc-linux-gnu (32-bit)

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> x <- c(1.55,1.56,1.56,1.57,1.57,1.58,1.58,1.58,1.58,1.59,1.59,1.6,1.6,1.61,1.62,1.62,1.63,1.63,1.63,1.63,1.63,1.63,1.64,1.64,1.64,1.65,1.65,1.66,1.67,1.67,1.68,1.68,1.69,1.7,1.71,1.72,1.72,1.73,1.73,1.73,1.73,1.74,1.75,1.75,1.75,1.76,1.76,1.76,1.77,1.78,1.78,1.79,1.79,1.79,1.79,1.79,1.83,1.83,1.83,1.83,1.84,1.84,1.84,1.85,1.85,1.85,1.86,1.86,1.86,1.87,1.87,1.88)
> par4 = '12'
> par3 = ''
> par2 = ''
> par1 = 'Gemiddelde prijs mineraal water in café's'
Error: unexpected symbol in "par1 = 'Gemiddelde prijs mineraal water in café's"
Execution halted