2 y-axes

[Sinead Done <sdone@xxxxxxxxxxxxxxxxxxx>]

Hi Everyone,

At the moment I am trying to plot some EBM data, with the variables 
albedo, cloud cover and temperature. However because albedo and cloud 
cover are fractional values (ie between 0 and 1), and temperature 
ranges from -15 to 27, the graph is very skewed and it is hard to see the 
albedo and cloud cover trends.

So, I was wondering if there is any way of defining 2 y-axes, with 
temperature on the left and albedo and cloud cover on the right.

eg

     30	|			|1
	|			|
	|			|
temp	|			| albedo
	|			|   &
	|			|cloud cover
	|			|
	|			|
     	|			|
     -15|_______________________|0
	-90	latitude       90


Thanks,
Sinead