R version 3.2.2 (2015-08-14) -- "Fire Safety"
Copyright (C) 2015 The R Foundation for Statistical Computing
Platform: x86_64-pc-linux-gnu (64-bit)

R is free software and comes with ABSOLUTELY NO WARRANTY.
You are welcome to redistribute it under certain conditions.
Type 'license()' or 'licence()' for distribution details.

R is a collaborative project with many contributors.
Type 'contributors()' for more information and
'citation()' on how to cite R or R packages in publications.

Type 'demo()' for some demos, 'help()' for on-line help, or
'help.start()' for an HTML browser interface to help.
Type 'q()' to quit R.

> x <- c(130,55,43,64,155,66,60,79,102,62,60,101,75,111,151,139,81,55,66,90,91,83,55,136,54,125,67,51,77,97,113,96,104,111,113,93,78,110,86,54,96,87,129,109,69,94,99,97,83,97)
> par4 = 'Unknown'
> par3 = 'FALSE'
> par2 = 'grey'
> par1 = '12'
> xlab = 'BTU's (in millions)'
Error: unexpected symbol in "xlab = 'BTU's"
Execution halted