The following R command creates a variable called observation and assigns a value to it from a table called leaf$\_$data, shown below. What value would be assigned to the variable?

observation $=$ leaf$\_$data$[2,3]$

Leaf Temperature Length Average$\_$leaf$\_$length

$1$ hot $3\mathrm{.}213\mathrm{.}19$

$2$ cold $3\mathrm{.}353\mathrm{.}19$