My margin account has only 6 names: IPL, BEP.UN, FIE, HOT.UN, VSN, & EXE in
declining order of size.
The model outputs are generally presented as an average
of an ensemble
of individual runs (and even ensembles
of individual runs from multiple models), in
order to remove this variability from the overall picture, because among grownups it is understood that 1) the long term trends are what we're interested and 2) the coarseness
of our measurements
of initial conditions combined with a finite modeled grid
size means that models can not predict precisely when and how temps will vary around a trend in the real world (they can, however, by being run many times, give us a good idea
of the * magnitude *
of that variance, including how many years
of flat or
declining temperatures we might expect to see pop up from time to time).