ranges not showing on chart
 

i have 3 ranges on my chart, being the 'relative', average and 'jps'. i have
adjusted the 'relative' as i am using the first third and last third of the
values instead of all of them by selecting them w the mouse and holding CTRL,
and now the average and 'jps' ranges are not showing. these values are all
close to the 'relative' so shouldnt be above the graph, and i have checked
that the values are in the cells i have sourced the data from.
i cannot think of whatelse i am missing
thanks everyone