R version 3.0.2 (2013-09-25) -- "Frisbee Sailing"
Copyright (C) 2013 The R Foundation for Statistical Computing
Platform: i686-pc-linux-gnu (32-bit)

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> x <- c(E1,23,24,22,20,24,27,28,27,24,23,24,27,27,28,27,23,24,28,27,25,19,24,20,28,26,23,23,20,11,24,25,23,18,20,20,24,23,25,28,26,26,23,22,24,21,20,22,20,25,20,22,23,25,23,23,22,24,25,21,12,17,20,23,23,20,28,24,24,24,24,28,25,21,25,25,18,17,26,28,21,27,22,21,25,22,23,26,19,25,21,13,24,25,26,25,25,22,21,23,25,24,21,21,25,22,20,20,23,28,23,28,24,18,20,28,21,21,25,19,18,21,22,24,15,28,26,23,26,20,22,20,23,22,24,23,22,26,23,27,23,21,26,23,21,27,19,23,25,23,22,22,25,25,28,28,20,25,19,25,22,18,20)
Error: object 'E1' not found
Execution halted