R version 2.15.3 (2013-03-01) -- "Security Blanket"
Copyright (C) 2013 The R Foundation for Statistical Computing
ISBN 3-900051-07-0
Platform: i686-pc-linux-gnu (32-bit)

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> x <- c(-11.3	-13,-6	-12.3,-5	-11,-4.67	-8.33,-2.67	-7.33,2.33	-6.5,3	-5.67,5	-4,7.5	-2,9.67	1.33,12	2,15.33	2.33,28.33	5.67,30	9,37.67	49.33)
Error: unexpected numeric constant in "x <- c(-11.3    -13,-6  -12.3,-5        -11,-4.67       -8.33,-2.67     -7.33,2.33      -6.5,3  -5.67,5 -4,7.5  -2,9.67 1.33"
Execution halted