R version 2.9.0 (2009-04-17)
Copyright (C) 2009 The R Foundation for Statistical Computing
ISBN 3-900051-07-0

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> y <- c(0.68136,0.67934,0.68021,0.66800,0.66341,0.67286,0.67397,0.67254,0.67511,0.67669,0.68782,0.68666,0.68330,0.69463,0.68935,0.68297,0.68598,0.67922,0.67933,0.68137,0.67760,0.68527,0.68756,0.66895,0.68399,0.68293,0.69233,0.68968,0.69867,0.69500,0.69862)
> x <- c(1.4816,1.4562,1.4268,1.4088,1.4016,1.3650,1.3190,1.3050,1.2785,1.3239,1.3449,1.2732,1.3322,1.4369,1.4975,1.5770,1.5553,1.5557,1.5750,1.5527,1.4748,1.4718,1.4570,1.4684,1.4227,1.3896,1.3622,1.3716,1.3419,1.3511,1.3516,1.3242,1.3074,1.2999,1.3213,1.2881,1.2611,1.2727,1.2811,1.2684,1.2650,1.2770,1.2271,1.2020,1.1938,1.2103,1.1856,1.1786,1.2015,1.2256,1.2292,1.2037,1.2165,1.2694,1.2938,1.3201,1.3014,1.3119,1.3408,1.2991)
> par5 = 'pond VK / euro'
> par4 = 'dollar / euro'
> par3 = 'TRUE'
> par2 = 'blue'
> par1 = 'red'
> ylab = ''
> main = 'Back to Back Histogram'
> 
> 
> 
> proc.time()
   user  system elapsed 
  0.195   0.034   0.391