a resolution of 1800 seconds per B<CDP>, you should create an
image with width 400 and time span 400*1800 seconds (use appropriate
start and end times, such as C<--start end-8days8hours>).
a resolution of 1800 seconds per B<CDP>, you should create an
image with width 400 and time span 400*1800 seconds (use appropriate
start and end times, such as C<--start end-8days8hours>).