% Example for using legends
size 6.5 6
heading \bf VLF blood pressure variability
xlabel Weeks on high-salt diet
ylabel mmHg$^2$
% SHR-SP
legend SHR-SP, n=34
type bar
xticlabels 3-5 6-7 
x 1 2
y  14.317 16.040 
dy 1.549 1.942
% SHR-SR
legend SHR-SR, n=37
type bar
x 1 2
y  12.850  19.608"*" 
dy 1.390   1.935
% NT-WKY
legend NT-WKY, n=27
type bar
x 1 2
y  6.374 8.466 
dy 1.026 1.031